56408980

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1\times {\mathrm{197}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 121080960

約数和(自身を除く): 64671980

約数列:

[1, 2, 4, 5, 10, 20, 103, 139, 197, 206, 278, 394, 412, 515, 556, 695, 788, 985, 1030, 1390, 1970, 2060, 2780, 3940, 14317, 20291, 27383, 28634, 40582, 54766, 57268, 71585, 81164, 101455, 109532, 136915, 143170, 202910, 273830, 286340, 405820, 547660, 2820449, 5640898, 11281796, 14102245, 28204490, 56408980]

約数ペア:

[(1, 56408980), (2, 28204490), (4, 14102245), (5, 11281796), (10, 5640898), (20, 2820449), (103, 547660), (139, 405820), (197, 286340), (206, 273830), (278, 202910), (394, 143170), (412, 136915), (515, 109532), (556, 101455), (695, 81164), (788, 71585), (985, 57268), (1030, 54766), (1390, 40582), (1970, 28634), (2060, 27383), (2780, 20291), (3940, 14317)]