20778804

素因数分解:

$2^2\times 3^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:517

約数の個数: 72

約数和(自身を含む): 55607552

約数和(自身を除く): 34828748

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 31, 36, 43, 62, 86, 93, 124, 129, 172, 186, 258, 279, 372, 387, 433, 516, 558, 774, 866, 1116, 1299, 1333, 1548, 1732, 2598, 2666, 3897, 3999, 5196, 5332, 7794, 7998, 11997, 13423, 15588, 15996, 18619, 23994, 26846, 37238, 40269, 47988, 53692, 55857, 74476, 80538, 111714, 120807, 161076, 167571, 223428, 241614, 335142, 483228, 577189, 670284, 1154378, 1731567, 2308756, 3463134, 5194701, 6926268, 10389402, 20778804]

約数ペア:

[(1, 20778804), (2, 10389402), (3, 6926268), (4, 5194701), (6, 3463134), (9, 2308756), (12, 1731567), (18, 1154378), (31, 670284), (36, 577189), (43, 483228), (62, 335142), (86, 241614), (93, 223428), (124, 167571), (129, 161076), (172, 120807), (186, 111714), (258, 80538), (279, 74476), (372, 55857), (387, 53692), (433, 47988), (516, 40269), (558, 37238), (774, 26846), (866, 23994), (1116, 18619), (1299, 15996), (1333, 15588), (1548, 13423), (1732, 11997), (2598, 7998), (2666, 7794), (3897, 5332), (3999, 5196)]