87714820

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 188310528

約数和(自身を除く): 100595708

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 223, 277, 284, 355, 446, 554, 710, 892, 1108, 1115, 1385, 1420, 2230, 2770, 4460, 5540, 15833, 19667, 31666, 39334, 61771, 63332, 78668, 79165, 98335, 123542, 158330, 196670, 247084, 308855, 316660, 393340, 617710, 1235420, 4385741, 8771482, 17542964, 21928705, 43857410, 87714820]

約数ペア:

[(1, 87714820), (2, 43857410), (4, 21928705), (5, 17542964), (10, 8771482), (20, 4385741), (71, 1235420), (142, 617710), (223, 393340), (277, 316660), (284, 308855), (355, 247084), (446, 196670), (554, 158330), (710, 123542), (892, 98335), (1108, 79165), (1115, 78668), (1385, 63332), (1420, 61771), (2230, 39334), (2770, 31666), (4460, 19667), (5540, 15833)]