20798933740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{419}}^1\times {\mathrm{190921}}^1$

素因数の和:191362

約数の個数: 48

約数和(自身を含む): 47150097120

約数和(自身を除く): 26351163380

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 419, 838, 1676, 2095, 4190, 5447, 8380, 10894, 21788, 27235, 54470, 108940, 190921, 381842, 763684, 954605, 1909210, 2481973, 3818420, 4963946, 9927892, 12409865, 24819730, 49639460, 79995899, 159991798, 319983596, 399979495, 799958990, 1039946687, 1599917980, 2079893374, 4159786748, 5199733435, 10399466870, 20798933740]

約数ペア:

[(1, 20798933740), (2, 10399466870), (4, 5199733435), (5, 4159786748), (10, 2079893374), (13, 1599917980), (20, 1039946687), (26, 799958990), (52, 399979495), (65, 319983596), (130, 159991798), (260, 79995899), (419, 49639460), (838, 24819730), (1676, 12409865), (2095, 9927892), (4190, 4963946), (5447, 3818420), (8380, 2481973), (10894, 1909210), (21788, 954605), (27235, 763684), (54470, 381842), (108940, 190921)]