71887881

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:393

約数の個数: 32

約数和(自身を含む): 105840000

約数和(自身を除く): 33952119

約数列:

[1, 3, 13, 39, 89, 139, 149, 267, 417, 447, 1157, 1807, 1937, 3471, 5421, 5811, 12371, 13261, 20711, 37113, 39783, 62133, 160823, 172393, 269243, 482469, 517179, 807729, 1843279, 5529837, 23962627, 71887881]

約数ペア:

[(1, 71887881), (3, 23962627), (13, 5529837), (39, 1843279), (89, 807729), (139, 517179), (149, 482469), (267, 269243), (417, 172393), (447, 160823), (1157, 62133), (1807, 39783), (1937, 37113), (3471, 20711), (5421, 13261), (5811, 12371)]