20277404

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1$

素因数の和:282

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 21655396

約数列:

[1, 2, 4, 7, 14, 28, 79, 89, 103, 158, 178, 206, 316, 356, 412, 553, 623, 721, 1106, 1246, 1442, 2212, 2492, 2884, 7031, 8137, 9167, 14062, 16274, 18334, 28124, 32548, 36668, 49217, 56959, 64169, 98434, 113918, 128338, 196868, 227836, 256676, 724193, 1448386, 2896772, 5069351, 10138702, 20277404]

約数ペア:

[(1, 20277404), (2, 10138702), (4, 5069351), (7, 2896772), (14, 1448386), (28, 724193), (79, 256676), (89, 227836), (103, 196868), (158, 128338), (178, 113918), (206, 98434), (316, 64169), (356, 56959), (412, 49217), (553, 36668), (623, 32548), (721, 28124), (1106, 18334), (1246, 16274), (1442, 14062), (2212, 9167), (2492, 8137), (2884, 7031)]