1990291355

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1\times {\mathrm{1931}}^1$

素因数の和:2207

約数の個数: 32

約数和(自身を含む): 2615433408

約数和(自身を除く): 625142053

約数列:

[1, 5, 13, 65, 101, 157, 505, 785, 1313, 1931, 2041, 6565, 9655, 10205, 15857, 25103, 79285, 125515, 195031, 206141, 303167, 975155, 1030705, 1515835, 2535403, 3941171, 12677015, 19705855, 30619867, 153099335, 398058271, 1990291355]

約数ペア:

[(1, 1990291355), (5, 398058271), (13, 153099335), (65, 30619867), (101, 19705855), (157, 12677015), (505, 3941171), (785, 2535403), (1313, 1515835), (1931, 1030705), (2041, 975155), (6565, 303167), (9655, 206141), (10205, 195031), (15857, 125515), (25103, 79285)]