87102520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1$

素因数の和:712

約数の個数: 64

約数和(自身を含む): 203148000

約数和(自身を除く): 116045480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 172, 178, 215, 344, 356, 430, 445, 569, 712, 860, 890, 1138, 1720, 1780, 2276, 2845, 3560, 3827, 4552, 5690, 7654, 11380, 15308, 19135, 22760, 24467, 30616, 38270, 48934, 50641, 76540, 97868, 101282, 122335, 153080, 195736, 202564, 244670, 253205, 405128, 489340, 506410, 978680, 1012820, 2025640, 2177563, 4355126, 8710252, 10887815, 17420504, 21775630, 43551260, 87102520]

約数ペア:

[(1, 87102520), (2, 43551260), (4, 21775630), (5, 17420504), (8, 10887815), (10, 8710252), (20, 4355126), (40, 2177563), (43, 2025640), (86, 1012820), (89, 978680), (172, 506410), (178, 489340), (215, 405128), (344, 253205), (356, 244670), (430, 202564), (445, 195736), (569, 153080), (712, 122335), (860, 101282), (890, 97868), (1138, 76540), (1720, 50641), (1780, 48934), (2276, 38270), (2845, 30616), (3560, 24467), (3827, 22760), (4552, 19135), (5690, 15308), (7654, 11380)]