18563680

素因数分解:

$2^5\times 5^1\times {\mathrm{157}}^1\times {\mathrm{739}}^1$

素因数の和:911

約数の個数: 48

約数和(自身を含む): 44195760

約数和(自身を除く): 25632080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 157, 160, 314, 628, 739, 785, 1256, 1478, 1570, 2512, 2956, 3140, 3695, 5024, 5912, 6280, 7390, 11824, 12560, 14780, 23648, 25120, 29560, 59120, 116023, 118240, 232046, 464092, 580115, 928184, 1160230, 1856368, 2320460, 3712736, 4640920, 9281840, 18563680]

約数ペア:

[(1, 18563680), (2, 9281840), (4, 4640920), (5, 3712736), (8, 2320460), (10, 1856368), (16, 1160230), (20, 928184), (32, 580115), (40, 464092), (80, 232046), (157, 118240), (160, 116023), (314, 59120), (628, 29560), (739, 25120), (785, 23648), (1256, 14780), (1478, 12560), (1570, 11824), (2512, 7390), (2956, 6280), (3140, 5912), (3695, 5024)]