21591063

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{449}}^1$

素因数の和:608

約数の個数: 32

約数和(自身を含む): 34776000

約数和(自身を除く): 13184937

約数列:

[1, 3, 9, 13, 27, 39, 117, 137, 351, 411, 449, 1233, 1347, 1781, 3699, 4041, 5343, 5837, 12123, 16029, 17511, 48087, 52533, 61513, 157599, 184539, 553617, 799669, 1660851, 2399007, 7197021, 21591063]

約数ペア:

[(1, 21591063), (3, 7197021), (9, 2399007), (13, 1660851), (27, 799669), (39, 553617), (117, 184539), (137, 157599), (351, 61513), (411, 52533), (449, 48087), (1233, 17511), (1347, 16029), (1781, 12123), (3699, 5837), (4041, 5343)]