19996080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1$

素因数の和:88

約数の個数: 240

約数和(自身を含む): 73522080

約数和(自身を除く): 53526000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 17, 20, 24, 26, 29, 30, 34, 39, 40, 48, 51, 52, 58, 60, 65, 68, 78, 80, 85, 87, 102, 104, 116, 120, 130, 136, 145, 156, 169, 170, 174, 195, 204, 208, 221, 232, 240, 255, 260, 272, 290, 312, 338, 340, 348, 377, 390, 408, 435, 442, 464, 493, 507, 510, 520, 580, 624, 663, 676, 680, 696, 754, 780, 816, 845, 870, 884, 986, 1014, 1020, 1040, 1105, 1131, 1160, 1326, 1352, 1360, 1392, 1479, 1508, 1560, 1690, 1740, 1768, 1885, 1972, 2028, 2040, 2210, 2262, 2320, 2465, 2535, 2652, 2704, 2873, 2958, 3016, 3120, 3315, 3380, 3480, 3536, 3770, 3944, 4056, 4080, 4420, 4524, 4901, 4930, 5070, 5304, 5655, 5746, 5916, 6032, 6409, 6630, 6760, 6960, 7395, 7540, 7888, 8112, 8619, 8840, 9048, 9802, 9860, 10140, 10608, 11310, 11492, 11832, 12818, 13260, 13520, 14365, 14703, 14790, 15080, 17238, 17680, 18096, 19227, 19604, 19720, 20280, 22620, 22984, 23664, 24505, 25636, 26520, 28730, 29406, 29580, 30160, 32045, 34476, 38454, 39208, 39440, 40560, 43095, 45240, 45968, 49010, 51272, 53040, 57460, 58812, 59160, 64090, 68952, 73515, 76908, 78416, 83317, 86190, 90480, 96135, 98020, 102544, 114920, 117624, 118320, 128180, 137904, 147030, 153816, 166634, 172380, 192270, 196040, 229840, 235248, 249951, 256360, 294060, 307632, 333268, 344760, 384540, 392080, 416585, 499902, 512720, 588120, 666536, 689520, 769080, 833170, 999804, 1176240, 1249755, 1333072, 1538160, 1666340, 1999608, 2499510, 3332680, 3999216, 4999020, 6665360, 9998040, 19996080]

約数ペア:

[(1, 19996080), (2, 9998040), (3, 6665360), (4, 4999020), (5, 3999216), (6, 3332680), (8, 2499510), (10, 1999608), (12, 1666340), (13, 1538160), (15, 1333072), (16, 1249755), (17, 1176240), (20, 999804), (24, 833170), (26, 769080), (29, 689520), (30, 666536), (34, 588120), (39, 512720), (40, 499902), (48, 416585), (51, 392080), (52, 384540), (58, 344760), (60, 333268), (65, 307632), (68, 294060), (78, 256360), (80, 249951), (85, 235248), (87, 229840), (102, 196040), (104, 192270), (116, 172380), (120, 166634), (130, 153816), (136, 147030), (145, 137904), (156, 128180), (169, 118320), (170, 117624), (174, 114920), (195, 102544), (204, 98020), (208, 96135), (221, 90480), (232, 86190), (240, 83317), (255, 78416), (260, 76908), (272, 73515), (290, 68952), (312, 64090), (338, 59160), (340, 58812), (348, 57460), (377, 53040), (390, 51272), (408, 49010), (435, 45968), (442, 45240), (464, 43095), (493, 40560), (507, 39440), (510, 39208), (520, 38454), (580, 34476), (624, 32045), (663, 30160), (676, 29580), (680, 29406), (696, 28730), (754, 26520), (780, 25636), (816, 24505), (845, 23664), (870, 22984), (884, 22620), (986, 20280), (1014, 19720), (1020, 19604), (1040, 19227), (1105, 18096), (1131, 17680), (1160, 17238), (1326, 15080), (1352, 14790), (1360, 14703), (1392, 14365), (1479, 13520), (1508, 13260), (1560, 12818), (1690, 11832), (1740, 11492), (1768, 11310), (1885, 10608), (1972, 10140), (2028, 9860), (2040, 9802), (2210, 9048), (2262, 8840), (2320, 8619), (2465, 8112), (2535, 7888), (2652, 7540), (2704, 7395), (2873, 6960), (2958, 6760), (3016, 6630), (3120, 6409), (3315, 6032), (3380, 5916), (3480, 5746), (3536, 5655), (3770, 5304), (3944, 5070), (4056, 4930), (4080, 4901), (4420, 4524)]