18711728

素因数分解:

$2^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{823}}^1$

素因数の和:874

約数の個数: 60

約数和(自身を含む): 43680240

約数和(自身を除く): 24968512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 49, 56, 58, 98, 112, 116, 196, 203, 232, 392, 406, 464, 784, 812, 823, 1421, 1624, 1646, 2842, 3248, 3292, 5684, 5761, 6584, 11368, 11522, 13168, 22736, 23044, 23867, 40327, 46088, 47734, 80654, 92176, 95468, 161308, 167069, 190936, 322616, 334138, 381872, 645232, 668276, 1169483, 1336552, 2338966, 2673104, 4677932, 9355864, 18711728]

約数ペア:

[(1, 18711728), (2, 9355864), (4, 4677932), (7, 2673104), (8, 2338966), (14, 1336552), (16, 1169483), (28, 668276), (29, 645232), (49, 381872), (56, 334138), (58, 322616), (98, 190936), (112, 167069), (116, 161308), (196, 95468), (203, 92176), (232, 80654), (392, 47734), (406, 46088), (464, 40327), (784, 23867), (812, 23044), (823, 22736), (1421, 13168), (1624, 11522), (1646, 11368), (2842, 6584), (3248, 5761), (3292, 5684)]