18709700

素因数分解:

$2^2\times 5^2\times {\mathrm{223}}^1\times {\mathrm{839}}^1$

素因数の和:1076

約数の個数: 36

約数和(自身を含む): 40830720

約数和(自身を除く): 22121020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 223, 446, 839, 892, 1115, 1678, 2230, 3356, 4195, 4460, 5575, 8390, 11150, 16780, 20975, 22300, 41950, 83900, 187097, 374194, 748388, 935485, 1870970, 3741940, 4677425, 9354850, 18709700]

約数ペア:

[(1, 18709700), (2, 9354850), (4, 4677425), (5, 3741940), (10, 1870970), (20, 935485), (25, 748388), (50, 374194), (100, 187097), (223, 83900), (446, 41950), (839, 22300), (892, 20975), (1115, 16780), (1678, 11150), (2230, 8390), (3356, 5575), (4195, 4460)]