18958205

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{173}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 27260928

約数和(自身を除く): 8302723

約数列:

[1, 5, 7, 31, 35, 101, 155, 173, 217, 505, 707, 865, 1085, 1211, 3131, 3535, 5363, 6055, 15655, 17473, 21917, 26815, 37541, 87365, 109585, 122311, 187705, 541663, 611555, 2708315, 3791641, 18958205]

約数ペア:

[(1, 18958205), (5, 3791641), (7, 2708315), (31, 611555), (35, 541663), (101, 187705), (155, 122311), (173, 109585), (217, 87365), (505, 37541), (707, 26815), (865, 21917), (1085, 17473), (1211, 15655), (3131, 6055), (3535, 5363)]