40458640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:520

約数の個数: 80

約数和(自身を含む): 101243520

約数和(自身を除く): 60784880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 71, 80, 85, 136, 142, 170, 272, 284, 340, 355, 419, 568, 680, 710, 838, 1136, 1207, 1360, 1420, 1676, 2095, 2414, 2840, 3352, 4190, 4828, 5680, 6035, 6704, 7123, 8380, 9656, 12070, 14246, 16760, 19312, 24140, 28492, 29749, 33520, 35615, 48280, 56984, 59498, 71230, 96560, 113968, 118996, 142460, 148745, 237992, 284920, 297490, 475984, 505733, 569840, 594980, 1011466, 1189960, 2022932, 2379920, 2528665, 4045864, 5057330, 8091728, 10114660, 20229320, 40458640]

約数ペア:

[(1, 40458640), (2, 20229320), (4, 10114660), (5, 8091728), (8, 5057330), (10, 4045864), (16, 2528665), (17, 2379920), (20, 2022932), (34, 1189960), (40, 1011466), (68, 594980), (71, 569840), (80, 505733), (85, 475984), (136, 297490), (142, 284920), (170, 237992), (272, 148745), (284, 142460), (340, 118996), (355, 113968), (419, 96560), (568, 71230), (680, 59498), (710, 56984), (838, 48280), (1136, 35615), (1207, 33520), (1360, 29749), (1420, 28492), (1676, 24140), (2095, 19312), (2414, 16760), (2840, 14246), (3352, 12070), (4190, 9656), (4828, 8380), (5680, 7123), (6035, 6704)]