20045680

素因数分解:

$2^4\times 5^1\times {\mathrm{127}}^1\times {\mathrm{1973}}^1$

素因数の和:2113

約数の個数: 40

約数和(自身を含む): 46996992

約数和(自身を除く): 26951312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 127, 254, 508, 635, 1016, 1270, 1973, 2032, 2540, 3946, 5080, 7892, 9865, 10160, 15784, 19730, 31568, 39460, 78920, 157840, 250571, 501142, 1002284, 1252855, 2004568, 2505710, 4009136, 5011420, 10022840, 20045680]

約数ペア:

[(1, 20045680), (2, 10022840), (4, 5011420), (5, 4009136), (8, 2505710), (10, 2004568), (16, 1252855), (20, 1002284), (40, 501142), (80, 250571), (127, 157840), (254, 78920), (508, 39460), (635, 31568), (1016, 19730), (1270, 15784), (1973, 10160), (2032, 9865), (2540, 7892), (3946, 5080)]