128651240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{359}}^1$

素因数の和:435

約数の個数: 96

約数和(自身を含む): 318297600

約数和(自身を除く): 189646360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 289, 310, 340, 359, 527, 578, 620, 680, 718, 1054, 1156, 1240, 1436, 1445, 1795, 2108, 2312, 2635, 2872, 2890, 3590, 4216, 5270, 5780, 6103, 7180, 8959, 10540, 11129, 11560, 12206, 14360, 17918, 21080, 22258, 24412, 30515, 35836, 44516, 44795, 48824, 55645, 61030, 71672, 89032, 89590, 103751, 111290, 122060, 179180, 189193, 207502, 222580, 244120, 358360, 378386, 415004, 445160, 518755, 756772, 830008, 945965, 1037510, 1513544, 1891930, 2075020, 3216281, 3783860, 4150040, 6432562, 7567720, 12865124, 16081405, 25730248, 32162810, 64325620, 128651240]

約数ペア:

[(1, 128651240), (2, 64325620), (4, 32162810), (5, 25730248), (8, 16081405), (10, 12865124), (17, 7567720), (20, 6432562), (31, 4150040), (34, 3783860), (40, 3216281), (62, 2075020), (68, 1891930), (85, 1513544), (124, 1037510), (136, 945965), (155, 830008), (170, 756772), (248, 518755), (289, 445160), (310, 415004), (340, 378386), (359, 358360), (527, 244120), (578, 222580), (620, 207502), (680, 189193), (718, 179180), (1054, 122060), (1156, 111290), (1240, 103751), (1436, 89590), (1445, 89032), (1795, 71672), (2108, 61030), (2312, 55645), (2635, 48824), (2872, 44795), (2890, 44516), (3590, 35836), (4216, 30515), (5270, 24412), (5780, 22258), (6103, 21080), (7180, 17918), (8959, 14360), (10540, 12206), (11129, 11560)]