18961911

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{397}}^1$

素因数の和:496

約数の個数: 32

約数和(自身を含む): 29611200

約数和(自身を除く): 10649289

約数列:

[1, 3, 9, 27, 29, 61, 87, 183, 261, 397, 549, 783, 1191, 1647, 1769, 3573, 5307, 10719, 11513, 15921, 24217, 34539, 47763, 72651, 103617, 217953, 310851, 653859, 702293, 2106879, 6320637, 18961911]

約数ペア:

[(1, 18961911), (3, 6320637), (9, 2106879), (27, 702293), (29, 653859), (61, 310851), (87, 217953), (183, 103617), (261, 72651), (397, 47763), (549, 34539), (783, 24217), (1191, 15921), (1647, 11513), (1769, 10719), (3573, 5307)]