31813983880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{10193}}^1$

素因数の和:10439

約数の個数: 128

約数和(自身を含む): 83496199680

約数和(自身を除く): 51682215800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 157, 280, 284, 314, 355, 497, 568, 628, 710, 785, 994, 1099, 1256, 1420, 1570, 1988, 2198, 2485, 2840, 3140, 3976, 4396, 4970, 5495, 6280, 8792, 9940, 10193, 10990, 11147, 19880, 20386, 21980, 22294, 40772, 43960, 44588, 50965, 55735, 71351, 78029, 81544, 89176, 101930, 111470, 142702, 156058, 203860, 222940, 285404, 312116, 356755, 390145, 407720, 445880, 570808, 624232, 713510, 723703, 780290, 1427020, 1447406, 1560580, 1600301, 2854040, 2894812, 3121160, 3200602, 3618515, 5065921, 5789624, 6401204, 7237030, 8001505, 10131842, 11202107, 12802408, 14474060, 16003010, 20263684, 22404214, 25329605, 28948120, 32006020, 40527368, 44808428, 50659210, 56010535, 64012040, 89616856, 101318420, 112021070, 113621371, 202636840, 224042140, 227242742, 448084280, 454485484, 568106855, 795349597, 908970968, 1136213710, 1590699194, 2272427420, 3181398388, 3976747985, 4544854840, 6362796776, 7953495970, 15906991940, 31813983880]

約数ペア:

[(1, 31813983880), (2, 15906991940), (4, 7953495970), (5, 6362796776), (7, 4544854840), (8, 3976747985), (10, 3181398388), (14, 2272427420), (20, 1590699194), (28, 1136213710), (35, 908970968), (40, 795349597), (56, 568106855), (70, 454485484), (71, 448084280), (140, 227242742), (142, 224042140), (157, 202636840), (280, 113621371), (284, 112021070), (314, 101318420), (355, 89616856), (497, 64012040), (568, 56010535), (628, 50659210), (710, 44808428), (785, 40527368), (994, 32006020), (1099, 28948120), (1256, 25329605), (1420, 22404214), (1570, 20263684), (1988, 16003010), (2198, 14474060), (2485, 12802408), (2840, 11202107), (3140, 10131842), (3976, 8001505), (4396, 7237030), (4970, 6401204), (5495, 5789624), (6280, 5065921), (8792, 3618515), (9940, 3200602), (10193, 3121160), (10990, 2894812), (11147, 2854040), (19880, 1600301), (20386, 1560580), (21980, 1447406), (22294, 1427020), (40772, 780290), (43960, 723703), (44588, 713510), (50965, 624232), (55735, 570808), (71351, 445880), (78029, 407720), (81544, 390145), (89176, 356755), (101930, 312116), (111470, 285404), (142702, 222940), (156058, 203860)]