21748887

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{569}}^1$

素因数の和:743

約数の個数: 24

約数和(自身を含む): 32722560

約数和(自身を除く): 10973673

約数列:

[1, 3, 9, 31, 93, 137, 279, 411, 569, 1233, 1707, 4247, 5121, 12741, 17639, 38223, 52917, 77953, 158751, 233859, 701577, 2416543, 7249629, 21748887]

約数ペア:

[(1, 21748887), (3, 7249629), (9, 2416543), (31, 701577), (93, 233859), (137, 158751), (279, 77953), (411, 52917), (569, 38223), (1233, 17639), (1707, 12741), (4247, 5121)]