20864030

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{401}}^1$

素因数の和:473

約数の個数: 48

約数和(自身を含む): 42345072

約数和(自身を除く): 21481042

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 121, 215, 242, 401, 430, 473, 605, 802, 946, 1210, 2005, 2365, 4010, 4411, 4730, 5203, 8822, 10406, 17243, 22055, 26015, 34486, 44110, 48521, 52030, 86215, 97042, 172430, 189673, 242605, 379346, 485210, 948365, 1896730, 2086403, 4172806, 10432015, 20864030]

約数ペア:

[(1, 20864030), (2, 10432015), (5, 4172806), (10, 2086403), (11, 1896730), (22, 948365), (43, 485210), (55, 379346), (86, 242605), (110, 189673), (121, 172430), (215, 97042), (242, 86215), (401, 52030), (430, 48521), (473, 44110), (605, 34486), (802, 26015), (946, 22055), (1210, 17243), (2005, 10406), (2365, 8822), (4010, 5203), (4411, 4730)]