28505178

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1997}}^1$

素因数の和:2079

約数の個数: 48

約数和(自身を含む): 67636296

約数和(自身を除く): 39131118

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 61, 78, 117, 122, 183, 234, 366, 549, 793, 1098, 1586, 1997, 2379, 3994, 4758, 5991, 7137, 11982, 14274, 17973, 25961, 35946, 51922, 77883, 121817, 155766, 233649, 243634, 365451, 467298, 730902, 1096353, 1583621, 2192706, 3167242, 4750863, 9501726, 14252589, 28505178]

約数ペア:

[(1, 28505178), (2, 14252589), (3, 9501726), (6, 4750863), (9, 3167242), (13, 2192706), (18, 1583621), (26, 1096353), (39, 730902), (61, 467298), (78, 365451), (117, 243634), (122, 233649), (183, 155766), (234, 121817), (366, 77883), (549, 51922), (793, 35946), (1098, 25961), (1586, 17973), (1997, 14274), (2379, 11982), (3994, 7137), (4758, 5991)]