19927490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{383}}^1$

素因数の和:455

約数の個数: 48

約数和(自身を含む): 40449024

約数和(自身を除く): 20521534

約数列:

[1, 2, 5, 10, 11, 22, 43, 55, 86, 110, 121, 215, 242, 383, 430, 473, 605, 766, 946, 1210, 1915, 2365, 3830, 4213, 4730, 5203, 8426, 10406, 16469, 21065, 26015, 32938, 42130, 46343, 52030, 82345, 92686, 164690, 181159, 231715, 362318, 463430, 905795, 1811590, 1992749, 3985498, 9963745, 19927490]

約数ペア:

[(1, 19927490), (2, 9963745), (5, 3985498), (10, 1992749), (11, 1811590), (22, 905795), (43, 463430), (55, 362318), (86, 231715), (110, 181159), (121, 164690), (215, 92686), (242, 82345), (383, 52030), (430, 46343), (473, 42130), (605, 32938), (766, 26015), (946, 21065), (1210, 16469), (1915, 10406), (2365, 8426), (3830, 5203), (4213, 4730)]