80511920

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4513}}^1$

素因数の和:4749

約数の個数: 40

約数和(自身を含む): 188071296

約数和(自身を除く): 107559376

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 4513, 8920, 9026, 17840, 18052, 22565, 36104, 45130, 72208, 90260, 180520, 361040, 1006399, 2012798, 4025596, 5031995, 8051192, 10063990, 16102384, 20127980, 40255960, 80511920]

約数ペア:

[(1, 80511920), (2, 40255960), (4, 20127980), (5, 16102384), (8, 10063990), (10, 8051192), (16, 5031995), (20, 4025596), (40, 2012798), (80, 1006399), (223, 361040), (446, 180520), (892, 90260), (1115, 72208), (1784, 45130), (2230, 36104), (3568, 22565), (4460, 18052), (4513, 17840), (8920, 9026)]