90720880

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1\times {\mathrm{233}}^1$

素因数の和:434

約数の個数: 80

約数和(自身を含む): 220057344

約数和(自身を除く): 129336464

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 157, 233, 248, 310, 314, 466, 496, 620, 628, 785, 932, 1165, 1240, 1256, 1570, 1864, 2330, 2480, 2512, 3140, 3728, 4660, 4867, 6280, 7223, 9320, 9734, 12560, 14446, 18640, 19468, 24335, 28892, 36115, 36581, 38936, 48670, 57784, 72230, 73162, 77872, 97340, 115568, 144460, 146324, 182905, 194680, 288920, 292648, 365810, 389360, 577840, 585296, 731620, 1134011, 1463240, 2268022, 2926480, 4536044, 5670055, 9072088, 11340110, 18144176, 22680220, 45360440, 90720880]

約数ペア:

[(1, 90720880), (2, 45360440), (4, 22680220), (5, 18144176), (8, 11340110), (10, 9072088), (16, 5670055), (20, 4536044), (31, 2926480), (40, 2268022), (62, 1463240), (80, 1134011), (124, 731620), (155, 585296), (157, 577840), (233, 389360), (248, 365810), (310, 292648), (314, 288920), (466, 194680), (496, 182905), (620, 146324), (628, 144460), (785, 115568), (932, 97340), (1165, 77872), (1240, 73162), (1256, 72230), (1570, 57784), (1864, 48670), (2330, 38936), (2480, 36581), (2512, 36115), (3140, 28892), (3728, 24335), (4660, 19468), (4867, 18640), (6280, 14446), (7223, 12560), (9320, 9734)]