71087540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{499}}^1$

素因数の和:944

約数の個数: 48

約数和(自身を含む): 158760000

約数和(自身を除く): 87672460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 419, 499, 838, 998, 1676, 1996, 2095, 2495, 4190, 4990, 7123, 8380, 8483, 9980, 14246, 16966, 28492, 33932, 35615, 42415, 71230, 84830, 142460, 169660, 209081, 418162, 836324, 1045405, 2090810, 3554377, 4181620, 7108754, 14217508, 17771885, 35543770, 71087540]

約数ペア:

[(1, 71087540), (2, 35543770), (4, 17771885), (5, 14217508), (10, 7108754), (17, 4181620), (20, 3554377), (34, 2090810), (68, 1045405), (85, 836324), (170, 418162), (340, 209081), (419, 169660), (499, 142460), (838, 84830), (998, 71230), (1676, 42415), (1996, 35615), (2095, 33932), (2495, 28492), (4190, 16966), (4990, 14246), (7123, 9980), (8380, 8483)]