21439665

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{547}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 40692288

約数和(自身を除く): 19252623

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 67, 117, 195, 201, 335, 547, 585, 603, 871, 1005, 1641, 2613, 2735, 3015, 4355, 4923, 7111, 7839, 8205, 13065, 21333, 24615, 35555, 36649, 39195, 63999, 106665, 109947, 183245, 319995, 329841, 476437, 549735, 1429311, 1649205, 2382185, 4287933, 7146555, 21439665]

約数ペア:

[(1, 21439665), (3, 7146555), (5, 4287933), (9, 2382185), (13, 1649205), (15, 1429311), (39, 549735), (45, 476437), (65, 329841), (67, 319995), (117, 183245), (195, 109947), (201, 106665), (335, 63999), (547, 39195), (585, 36649), (603, 35555), (871, 24615), (1005, 21333), (1641, 13065), (2613, 8205), (2735, 7839), (3015, 7111), (4355, 4923)]