808989560

素因数分解:

$2^3\times 5^1\times {\mathrm{1901}}^1\times {\mathrm{10639}}^1$

素因数の和:12551

約数の個数: 32

約数和(自身を含む): 1821355200

約数和(自身を除く): 1012365640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1901, 3802, 7604, 9505, 10639, 15208, 19010, 21278, 38020, 42556, 53195, 76040, 85112, 106390, 212780, 425560, 20224739, 40449478, 80898956, 101123695, 161797912, 202247390, 404494780, 808989560]

約数ペア:

[(1, 808989560), (2, 404494780), (4, 202247390), (5, 161797912), (8, 101123695), (10, 80898956), (20, 40449478), (40, 20224739), (1901, 425560), (3802, 212780), (7604, 106390), (9505, 85112), (10639, 76040), (15208, 53195), (19010, 42556), (21278, 38020)]