20239875

素因数分解:

$3^4\times 5^3\times {\mathrm{1999}}^1$

素因数の和:2026

約数の個数: 40

約数和(自身を含む): 37752000

約数和(自身を除く): 17512125

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 1999, 2025, 3375, 5997, 9995, 10125, 17991, 29985, 49975, 53973, 89955, 149925, 161919, 249875, 269865, 449775, 749625, 809595, 1349325, 2248875, 4047975, 6746625, 20239875]

約数ペア:

[(1, 20239875), (3, 6746625), (5, 4047975), (9, 2248875), (15, 1349325), (25, 809595), (27, 749625), (45, 449775), (75, 269865), (81, 249875), (125, 161919), (135, 149925), (225, 89955), (375, 53973), (405, 49975), (675, 29985), (1125, 17991), (1999, 10125), (2025, 9995), (3375, 5997)]