18802640

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{3853}}^1$

素因数の和:3927

約数の個数: 40

約数和(自身を含む): 44444328

約数和(自身を除く): 25641688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 3853, 4880, 7706, 15412, 19265, 30824, 38530, 61648, 77060, 154120, 235033, 308240, 470066, 940132, 1175165, 1880264, 2350330, 3760528, 4700660, 9401320, 18802640]

約数ペア:

[(1, 18802640), (2, 9401320), (4, 4700660), (5, 3760528), (8, 2350330), (10, 1880264), (16, 1175165), (20, 940132), (40, 470066), (61, 308240), (80, 235033), (122, 154120), (244, 77060), (305, 61648), (488, 38530), (610, 30824), (976, 19265), (1220, 15412), (2440, 7706), (3853, 4880)]