31387440

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:204

約数の個数: 240

約数和(自身を含む): 120608352

約数和(自身を除く): 89220912

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 17, 20, 21, 24, 28, 30, 34, 35, 40, 42, 48, 49, 51, 56, 60, 68, 70, 80, 84, 85, 98, 102, 105, 112, 119, 120, 136, 140, 147, 157, 168, 170, 196, 204, 210, 238, 240, 245, 255, 272, 280, 294, 314, 336, 340, 357, 392, 408, 420, 471, 476, 490, 510, 560, 588, 595, 628, 680, 714, 735, 784, 785, 816, 833, 840, 942, 952, 980, 1020, 1099, 1176, 1190, 1256, 1360, 1428, 1470, 1570, 1666, 1680, 1785, 1884, 1904, 1960, 2040, 2198, 2352, 2355, 2380, 2499, 2512, 2669, 2856, 2940, 3140, 3297, 3332, 3570, 3768, 3920, 4080, 4165, 4396, 4710, 4760, 4998, 5338, 5495, 5712, 5880, 6280, 6594, 6664, 7140, 7536, 7693, 8007, 8330, 8792, 9420, 9520, 9996, 10676, 10990, 11760, 12495, 12560, 13188, 13328, 13345, 14280, 15386, 16014, 16485, 16660, 17584, 18683, 18840, 19992, 21352, 21980, 23079, 24990, 26376, 26690, 28560, 30772, 32028, 32970, 33320, 37366, 37680, 38465, 39984, 40035, 42704, 43960, 46158, 49980, 52752, 53380, 56049, 61544, 64056, 65940, 66640, 74732, 76930, 80070, 87920, 92316, 93415, 99960, 106760, 112098, 115395, 123088, 128112, 130781, 131880, 149464, 153860, 160140, 184632, 186830, 199920, 213520, 224196, 230790, 261562, 263760, 280245, 298928, 307720, 320280, 369264, 373660, 392343, 448392, 461580, 523124, 560490, 615440, 640560, 653905, 747320, 784686, 896784, 923160, 1046248, 1120980, 1307810, 1494640, 1569372, 1846320, 1961715, 2092496, 2241960, 2615620, 3138744, 3923430, 4483920, 5231240, 6277488, 7846860, 10462480, 15693720, 31387440]

約数ペア:

[(1, 31387440), (2, 15693720), (3, 10462480), (4, 7846860), (5, 6277488), (6, 5231240), (7, 4483920), (8, 3923430), (10, 3138744), (12, 2615620), (14, 2241960), (15, 2092496), (16, 1961715), (17, 1846320), (20, 1569372), (21, 1494640), (24, 1307810), (28, 1120980), (30, 1046248), (34, 923160), (35, 896784), (40, 784686), (42, 747320), (48, 653905), (49, 640560), (51, 615440), (56, 560490), (60, 523124), (68, 461580), (70, 448392), (80, 392343), (84, 373660), (85, 369264), (98, 320280), (102, 307720), (105, 298928), (112, 280245), (119, 263760), (120, 261562), (136, 230790), (140, 224196), (147, 213520), (157, 199920), (168, 186830), (170, 184632), (196, 160140), (204, 153860), (210, 149464), (238, 131880), (240, 130781), (245, 128112), (255, 123088), (272, 115395), (280, 112098), (294, 106760), (314, 99960), (336, 93415), (340, 92316), (357, 87920), (392, 80070), (408, 76930), (420, 74732), (471, 66640), (476, 65940), (490, 64056), (510, 61544), (560, 56049), (588, 53380), (595, 52752), (628, 49980), (680, 46158), (714, 43960), (735, 42704), (784, 40035), (785, 39984), (816, 38465), (833, 37680), (840, 37366), (942, 33320), (952, 32970), (980, 32028), (1020, 30772), (1099, 28560), (1176, 26690), (1190, 26376), (1256, 24990), (1360, 23079), (1428, 21980), (1470, 21352), (1570, 19992), (1666, 18840), (1680, 18683), (1785, 17584), (1884, 16660), (1904, 16485), (1960, 16014), (2040, 15386), (2198, 14280), (2352, 13345), (2355, 13328), (2380, 13188), (2499, 12560), (2512, 12495), (2669, 11760), (2856, 10990), (2940, 10676), (3140, 9996), (3297, 9520), (3332, 9420), (3570, 8792), (3768, 8330), (3920, 8007), (4080, 7693), (4165, 7536), (4396, 7140), (4710, 6664), (4760, 6594), (4998, 6280), (5338, 5880), (5495, 5712)]