13257573

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{223}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 21504000

約数和(自身を除く): 8246427

約数列:

[1, 3, 7, 19, 21, 57, 133, 149, 223, 399, 447, 669, 1043, 1561, 2831, 3129, 4237, 4683, 8493, 12711, 19817, 29659, 33227, 59451, 88977, 99681, 232589, 631313, 697767, 1893939, 4419191, 13257573]

約数ペア:

[(1, 13257573), (3, 4419191), (7, 1893939), (19, 697767), (21, 631313), (57, 232589), (133, 99681), (149, 88977), (223, 59451), (399, 33227), (447, 29659), (669, 19817), (1043, 12711), (1561, 8493), (2831, 4683), (3129, 4237)]