21891780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{121621}}^1$

素因数の和:121636

約数の個数: 36

約数和(自身を含む): 66405612

約数和(自身を除く): 44513832

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 121621, 243242, 364863, 486484, 608105, 729726, 1094589, 1216210, 1459452, 1824315, 2189178, 2432420, 3648630, 4378356, 5472945, 7297260, 10945890, 21891780]

約数ペア:

[(1, 21891780), (2, 10945890), (3, 7297260), (4, 5472945), (5, 4378356), (6, 3648630), (9, 2432420), (10, 2189178), (12, 1824315), (15, 1459452), (18, 1216210), (20, 1094589), (30, 729726), (36, 608105), (45, 486484), (60, 364863), (90, 243242), (180, 121621)]