18407620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11953}}^1$

素因数の和:11980

約数の個数: 48

約数和(自身を含む): 48198528

約数和(自身を除く): 29790908

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11953, 23906, 47812, 59765, 83671, 119530, 131483, 167342, 239060, 262966, 334684, 418355, 525932, 657415, 836710, 920381, 1314830, 1673420, 1840762, 2629660, 3681524, 4601905, 9203810, 18407620]

約数ペア:

[(1, 18407620), (2, 9203810), (4, 4601905), (5, 3681524), (7, 2629660), (10, 1840762), (11, 1673420), (14, 1314830), (20, 920381), (22, 836710), (28, 657415), (35, 525932), (44, 418355), (55, 334684), (70, 262966), (77, 239060), (110, 167342), (140, 131483), (154, 119530), (220, 83671), (308, 59765), (385, 47812), (770, 23906), (1540, 11953)]