20448855

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7213}}^1$

素因数の和:7237

約数の個数: 40

約数和(自身を含む): 41898912

約数和(自身を除く): 21450057

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7213, 21639, 36065, 50491, 64917, 108195, 151473, 194751, 252455, 324585, 454419, 584253, 757365, 973755, 1363257, 2272095, 2921265, 4089771, 6816285, 20448855]

約数ペア:

[(1, 20448855), (3, 6816285), (5, 4089771), (7, 2921265), (9, 2272095), (15, 1363257), (21, 973755), (27, 757365), (35, 584253), (45, 454419), (63, 324585), (81, 252455), (105, 194751), (135, 151473), (189, 108195), (315, 64917), (405, 50491), (567, 36065), (945, 21639), (2835, 7213)]