20819178

素因数分解:

$2^1\times 3^2\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{283}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 46696416

約数和(自身を除く): 25877238

約数列:

[1, 2, 3, 6, 9, 18, 61, 67, 122, 134, 183, 201, 283, 366, 402, 549, 566, 603, 849, 1098, 1206, 1698, 2547, 4087, 5094, 8174, 12261, 17263, 18961, 24522, 34526, 36783, 37922, 51789, 56883, 73566, 103578, 113766, 155367, 170649, 310734, 341298, 1156621, 2313242, 3469863, 6939726, 10409589, 20819178]

約数ペア:

[(1, 20819178), (2, 10409589), (3, 6939726), (6, 3469863), (9, 2313242), (18, 1156621), (61, 341298), (67, 310734), (122, 170649), (134, 155367), (183, 113766), (201, 103578), (283, 73566), (366, 56883), (402, 51789), (549, 37922), (566, 36783), (603, 34526), (849, 24522), (1098, 18961), (1206, 17263), (1698, 12261), (2547, 8174), (4087, 5094)]