81221488

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{163753}}^1$

素因数の和:163792

約数の個数: 20

約数和(自身を含む): 162443968

約数和(自身を除く): 81222480

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 163753, 327506, 655012, 1310024, 2620048, 5076343, 10152686, 20305372, 40610744, 81221488]

約数ペア:

[(1, 81221488), (2, 40610744), (4, 20305372), (8, 10152686), (16, 5076343), (31, 2620048), (62, 1310024), (124, 655012), (248, 327506), (496, 163753)]