21999081

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{367}}^1$

素因数の和:465

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 11385879

約数列:

[1, 3, 13, 29, 39, 53, 87, 159, 367, 377, 689, 1101, 1131, 1537, 2067, 4611, 4771, 10643, 14313, 19451, 19981, 31929, 58353, 59943, 138359, 252863, 415077, 564079, 758589, 1692237, 7333027, 21999081]

約数ペア:

[(1, 21999081), (3, 7333027), (13, 1692237), (29, 758589), (39, 564079), (53, 415077), (87, 252863), (159, 138359), (367, 59943), (377, 58353), (689, 31929), (1101, 19981), (1131, 19451), (1537, 14313), (2067, 10643), (4611, 4771)]