81315790

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{461}}^1\times {\mathrm{569}}^1$

素因数の和:1068

約数の個数: 32

約数和(自身を含む): 151683840

約数和(自身を除く): 70368050

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 461, 569, 922, 1138, 2305, 2845, 4610, 5690, 14291, 17639, 28582, 35278, 71455, 88195, 142910, 176390, 262309, 524618, 1311545, 2623090, 8131579, 16263158, 40657895, 81315790]

約数ペア:

[(1, 81315790), (2, 40657895), (5, 16263158), (10, 8131579), (31, 2623090), (62, 1311545), (155, 524618), (310, 262309), (461, 176390), (569, 142910), (922, 88195), (1138, 71455), (2305, 35278), (2845, 28582), (4610, 17639), (5690, 14291)]