220191320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{134263}}^1$

素因数の和:134315

約数の個数: 32

約数和(自身を含む): 507517920

約数和(自身を除く): 287326600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 134263, 268526, 537052, 671315, 1074104, 1342630, 2685260, 5370520, 5504783, 11009566, 22019132, 27523915, 44038264, 55047830, 110095660, 220191320]

約数ペア:

[(1, 220191320), (2, 110095660), (4, 55047830), (5, 44038264), (8, 27523915), (10, 22019132), (20, 11009566), (40, 5504783), (41, 5370520), (82, 2685260), (164, 1342630), (205, 1074104), (328, 671315), (410, 537052), (820, 268526), (1640, 134263)]