18641552

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1$

素因数の和:387

約数の個数: 40

約数和(自身を含む): 37440312

約数和(自身を除く): 18798760

約数列:

[1, 2, 4, 8, 16, 41, 82, 157, 164, 181, 314, 328, 362, 628, 656, 724, 1256, 1448, 2512, 2896, 6437, 7421, 12874, 14842, 25748, 28417, 29684, 51496, 56834, 59368, 102992, 113668, 118736, 227336, 454672, 1165097, 2330194, 4660388, 9320776, 18641552]

約数ペア:

[(1, 18641552), (2, 9320776), (4, 4660388), (8, 2330194), (16, 1165097), (41, 454672), (82, 227336), (157, 118736), (164, 113668), (181, 102992), (314, 59368), (328, 56834), (362, 51496), (628, 29684), (656, 28417), (724, 25748), (1256, 14842), (1448, 12874), (2512, 7421), (2896, 6437)]