81303638

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{677}}^1$

素因数の和:872

約数の個数: 32

約数和(自身を含む): 136684800

約数和(自身を除く): 55381162

約数列:

[1, 2, 13, 26, 31, 62, 149, 298, 403, 677, 806, 1354, 1937, 3874, 4619, 8801, 9238, 17602, 20987, 41974, 60047, 100873, 120094, 201746, 272831, 545662, 1311349, 2622698, 3127063, 6254126, 40651819, 81303638]

約数ペア:

[(1, 81303638), (2, 40651819), (13, 6254126), (26, 3127063), (31, 2622698), (62, 1311349), (149, 545662), (298, 272831), (403, 201746), (677, 120094), (806, 100873), (1354, 60047), (1937, 41974), (3874, 20987), (4619, 17602), (8801, 9238)]