28540863

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:157

約数の個数: 64

約数和(自身を含む): 48885760

約数和(自身を除く): 20344897

約数列:

[1, 3, 9, 13, 27, 31, 39, 43, 61, 93, 117, 129, 183, 279, 351, 387, 403, 549, 559, 793, 837, 1161, 1209, 1333, 1647, 1677, 1891, 2379, 2623, 3627, 3999, 5031, 5673, 7137, 7869, 10881, 11997, 15093, 17019, 17329, 21411, 23607, 24583, 34099, 35991, 51057, 51987, 70821, 73749, 81313, 102297, 155961, 221247, 243939, 306891, 467883, 663741, 731817, 920673, 1057069, 2195451, 3171207, 9513621, 28540863]

約数ペア:

[(1, 28540863), (3, 9513621), (9, 3171207), (13, 2195451), (27, 1057069), (31, 920673), (39, 731817), (43, 663741), (61, 467883), (93, 306891), (117, 243939), (129, 221247), (183, 155961), (279, 102297), (351, 81313), (387, 73749), (403, 70821), (549, 51987), (559, 51057), (793, 35991), (837, 34099), (1161, 24583), (1209, 23607), (1333, 21411), (1647, 17329), (1677, 17019), (1891, 15093), (2379, 11997), (2623, 10881), (3627, 7869), (3999, 7137), (5031, 5673)]