20291880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:81

約数の個数: 256

約数和(自身を含む): 77760000

約数和(自身を除く): 57468120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 17, 20, 21, 24, 28, 29, 30, 34, 35, 40, 42, 49, 51, 56, 58, 60, 68, 70, 84, 85, 87, 98, 102, 105, 116, 119, 120, 136, 140, 145, 147, 168, 170, 174, 196, 203, 204, 210, 232, 238, 245, 255, 280, 290, 294, 340, 343, 348, 357, 392, 406, 408, 420, 435, 476, 490, 493, 510, 580, 588, 595, 609, 680, 686, 696, 714, 735, 812, 833, 840, 870, 952, 980, 986, 1015, 1020, 1029, 1160, 1176, 1190, 1218, 1372, 1421, 1428, 1470, 1479, 1624, 1666, 1715, 1740, 1785, 1960, 1972, 2030, 2040, 2058, 2380, 2436, 2465, 2499, 2744, 2842, 2856, 2940, 2958, 3045, 3332, 3430, 3451, 3480, 3570, 3944, 4060, 4116, 4165, 4263, 4760, 4872, 4930, 4998, 5145, 5684, 5831, 5880, 5916, 6090, 6664, 6860, 6902, 7105, 7140, 7395, 8120, 8232, 8330, 8526, 9860, 9947, 9996, 10290, 10353, 11368, 11662, 11832, 12180, 12495, 13720, 13804, 14210, 14280, 14790, 16660, 17052, 17255, 17493, 19720, 19894, 19992, 20580, 20706, 21315, 23324, 24157, 24360, 24990, 27608, 28420, 29155, 29580, 29841, 33320, 34104, 34510, 34986, 39788, 41160, 41412, 42630, 46648, 48314, 49735, 49980, 51765, 56840, 58310, 59160, 59682, 69020, 69972, 72471, 79576, 82824, 85260, 87465, 96628, 99470, 99960, 103530, 116620, 119364, 120785, 138040, 139944, 144942, 149205, 169099, 170520, 174930, 193256, 198940, 207060, 233240, 238728, 241570, 289884, 298410, 338198, 349860, 362355, 397880, 414120, 483140, 507297, 579768, 596820, 676396, 699720, 724710, 845495, 966280, 1014594, 1193640, 1352792, 1449420, 1690990, 2029188, 2536485, 2898840, 3381980, 4058376, 5072970, 6763960, 10145940, 20291880]

約数ペア:

[(1, 20291880), (2, 10145940), (3, 6763960), (4, 5072970), (5, 4058376), (6, 3381980), (7, 2898840), (8, 2536485), (10, 2029188), (12, 1690990), (14, 1449420), (15, 1352792), (17, 1193640), (20, 1014594), (21, 966280), (24, 845495), (28, 724710), (29, 699720), (30, 676396), (34, 596820), (35, 579768), (40, 507297), (42, 483140), (49, 414120), (51, 397880), (56, 362355), (58, 349860), (60, 338198), (68, 298410), (70, 289884), (84, 241570), (85, 238728), (87, 233240), (98, 207060), (102, 198940), (105, 193256), (116, 174930), (119, 170520), (120, 169099), (136, 149205), (140, 144942), (145, 139944), (147, 138040), (168, 120785), (170, 119364), (174, 116620), (196, 103530), (203, 99960), (204, 99470), (210, 96628), (232, 87465), (238, 85260), (245, 82824), (255, 79576), (280, 72471), (290, 69972), (294, 69020), (340, 59682), (343, 59160), (348, 58310), (357, 56840), (392, 51765), (406, 49980), (408, 49735), (420, 48314), (435, 46648), (476, 42630), (490, 41412), (493, 41160), (510, 39788), (580, 34986), (588, 34510), (595, 34104), (609, 33320), (680, 29841), (686, 29580), (696, 29155), (714, 28420), (735, 27608), (812, 24990), (833, 24360), (840, 24157), (870, 23324), (952, 21315), (980, 20706), (986, 20580), (1015, 19992), (1020, 19894), (1029, 19720), (1160, 17493), (1176, 17255), (1190, 17052), (1218, 16660), (1372, 14790), (1421, 14280), (1428, 14210), (1470, 13804), (1479, 13720), (1624, 12495), (1666, 12180), (1715, 11832), (1740, 11662), (1785, 11368), (1960, 10353), (1972, 10290), (2030, 9996), (2040, 9947), (2058, 9860), (2380, 8526), (2436, 8330), (2465, 8232), (2499, 8120), (2744, 7395), (2842, 7140), (2856, 7105), (2940, 6902), (2958, 6860), (3045, 6664), (3332, 6090), (3430, 5916), (3451, 5880), (3480, 5831), (3570, 5684), (3944, 5145), (4060, 4998), (4116, 4930), (4165, 4872), (4263, 4760)]