20551400

素因数分解:

$2^3\times 5^2\times {\mathrm{211}}^1\times {\mathrm{487}}^1$

素因数の和:714

約数の個数: 48

約数和(自身を含む): 48107040

約数和(自身を除く): 27555640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 211, 422, 487, 844, 974, 1055, 1688, 1948, 2110, 2435, 3896, 4220, 4870, 5275, 8440, 9740, 10550, 12175, 19480, 21100, 24350, 42200, 48700, 97400, 102757, 205514, 411028, 513785, 822056, 1027570, 2055140, 2568925, 4110280, 5137850, 10275700, 20551400]

約数ペア:

[(1, 20551400), (2, 10275700), (4, 5137850), (5, 4110280), (8, 2568925), (10, 2055140), (20, 1027570), (25, 822056), (40, 513785), (50, 411028), (100, 205514), (200, 102757), (211, 97400), (422, 48700), (487, 42200), (844, 24350), (974, 21100), (1055, 19480), (1688, 12175), (1948, 10550), (2110, 9740), (2435, 8440), (3896, 5275), (4220, 4870)]