20758160

素因数分解:

$2^4\times 5^1\times {\mathrm{313}}^1\times {\mathrm{829}}^1$

素因数の和:1155

約数の個数: 40

約数和(自身を含む): 48475320

約数和(自身を除く): 27717160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 313, 626, 829, 1252, 1565, 1658, 2504, 3130, 3316, 4145, 5008, 6260, 6632, 8290, 12520, 13264, 16580, 25040, 33160, 66320, 259477, 518954, 1037908, 1297385, 2075816, 2594770, 4151632, 5189540, 10379080, 20758160]

約数ペア:

[(1, 20758160), (2, 10379080), (4, 5189540), (5, 4151632), (8, 2594770), (10, 2075816), (16, 1297385), (20, 1037908), (40, 518954), (80, 259477), (313, 66320), (626, 33160), (829, 25040), (1252, 16580), (1565, 13264), (1658, 12520), (2504, 8290), (3130, 6632), (3316, 6260), (4145, 5008)]