81457532

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{79}}^2\times {\mathrm{251}}^1$

素因数の和:426

約数の個数: 36

約数和(自身を含む): 156103416

約数和(自身を除く): 74645884

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 251, 316, 502, 1004, 1027, 2054, 3263, 4108, 6241, 6526, 12482, 13052, 19829, 24964, 39658, 79316, 81133, 162266, 257777, 324532, 515554, 1031108, 1566491, 3132982, 6265964, 20364383, 40728766, 81457532]

約数ペア:

[(1, 81457532), (2, 40728766), (4, 20364383), (13, 6265964), (26, 3132982), (52, 1566491), (79, 1031108), (158, 515554), (251, 324532), (316, 257777), (502, 162266), (1004, 81133), (1027, 79316), (2054, 39658), (3263, 24964), (4108, 19829), (6241, 13052), (6526, 12482)]