21086050

素因数分解:

$2^1\times 5^2\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:247

約数の個数: 48

約数和(自身を含む): 40879080

約数和(自身を除く): 19793030

約数列:

[1, 2, 5, 10, 25, 50, 53, 73, 106, 109, 146, 218, 265, 365, 530, 545, 730, 1090, 1325, 1825, 2650, 2725, 3650, 3869, 5450, 5777, 7738, 7957, 11554, 15914, 19345, 28885, 38690, 39785, 57770, 79570, 96725, 144425, 193450, 198925, 288850, 397850, 421721, 843442, 2108605, 4217210, 10543025, 21086050]

約数ペア:

[(1, 21086050), (2, 10543025), (5, 4217210), (10, 2108605), (25, 843442), (50, 421721), (53, 397850), (73, 288850), (106, 198925), (109, 193450), (146, 144425), (218, 96725), (265, 79570), (365, 57770), (530, 39785), (545, 38690), (730, 28885), (1090, 19345), (1325, 15914), (1825, 11554), (2650, 7957), (2725, 7738), (3650, 5777), (3869, 5450)]