20839640

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{6277}}^1$

素因数の和:6371

約数の個数: 32

約数和(自身を含む): 47461680

約数和(自身を除く): 26622040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 6277, 12554, 25108, 31385, 50216, 62770, 125540, 251080, 520991, 1041982, 2083964, 2604955, 4167928, 5209910, 10419820, 20839640]

約数ペア:

[(1, 20839640), (2, 10419820), (4, 5209910), (5, 4167928), (8, 2604955), (10, 2083964), (20, 1041982), (40, 520991), (83, 251080), (166, 125540), (332, 62770), (415, 50216), (664, 31385), (830, 25108), (1660, 12554), (3320, 6277)]