13557921

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 20415360

約数和(自身を除く): 6857439

約数列:

[1, 3, 13, 39, 41, 61, 123, 139, 183, 417, 533, 793, 1599, 1807, 2379, 2501, 5421, 5699, 7503, 8479, 17097, 25437, 32513, 74087, 97539, 110227, 222261, 330681, 347639, 1042917, 4519307, 13557921]

約数ペア:

[(1, 13557921), (3, 4519307), (13, 1042917), (39, 347639), (41, 330681), (61, 222261), (123, 110227), (139, 97539), (183, 74087), (417, 32513), (533, 25437), (793, 17097), (1599, 8479), (1807, 7503), (2379, 5699), (2501, 5421)]