18900495

素因数分解:

$3^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1597}}^1$

素因数の和:1871

約数の個数: 24

約数和(自身を含む): 32906016

約数和(自身を除く): 14005521

約数列:

[1, 3, 5, 9, 15, 45, 263, 789, 1315, 1597, 2367, 3945, 4791, 7985, 11835, 14373, 23955, 71865, 420011, 1260033, 2100055, 3780099, 6300165, 18900495]

約数ペア:

[(1, 18900495), (3, 6300165), (5, 3780099), (9, 2100055), (15, 1260033), (45, 420011), (263, 71865), (789, 23955), (1315, 14373), (1597, 11835), (2367, 7985), (3945, 4791)]