25440640

素因数分解:

$2^7\times 5^1\times {\mathrm{127}}^1\times {\mathrm{313}}^1$

素因数の和:459

約数の個数: 64

約数和(自身を含む): 61493760

約数和(自身を除く): 36053120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 313, 320, 508, 626, 635, 640, 1016, 1252, 1270, 1565, 2032, 2504, 2540, 3130, 4064, 5008, 5080, 6260, 8128, 10016, 10160, 12520, 16256, 20032, 20320, 25040, 39751, 40064, 40640, 50080, 79502, 81280, 100160, 159004, 198755, 200320, 318008, 397510, 636016, 795020, 1272032, 1590040, 2544064, 3180080, 5088128, 6360160, 12720320, 25440640]

約数ペア:

[(1, 25440640), (2, 12720320), (4, 6360160), (5, 5088128), (8, 3180080), (10, 2544064), (16, 1590040), (20, 1272032), (32, 795020), (40, 636016), (64, 397510), (80, 318008), (127, 200320), (128, 198755), (160, 159004), (254, 100160), (313, 81280), (320, 79502), (508, 50080), (626, 40640), (635, 40064), (640, 39751), (1016, 25040), (1252, 20320), (1270, 20032), (1565, 16256), (2032, 12520), (2504, 10160), (2540, 10016), (3130, 8128), (4064, 6260), (5008, 5080)]