15813640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{6481}}^1$

素因数の和:6553

約数の個数: 32

約数和(自身を含む): 36169560

約数和(自身を除く): 20355920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 6481, 12962, 25924, 32405, 51848, 64810, 129620, 259240, 395341, 790682, 1581364, 1976705, 3162728, 3953410, 7906820, 15813640]

約数ペア:

[(1, 15813640), (2, 7906820), (4, 3953410), (5, 3162728), (8, 1976705), (10, 1581364), (20, 790682), (40, 395341), (61, 259240), (122, 129620), (244, 64810), (305, 51848), (488, 32405), (610, 25924), (1220, 12962), (2440, 6481)]