18751875

素因数分解:

$3^1\times 5^4\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:233

約数の個数: 40

約数和(自身を含む): 31902288

約数和(自身を除く): 13150413

約数列:

[1, 3, 5, 15, 25, 73, 75, 125, 137, 219, 365, 375, 411, 625, 685, 1095, 1825, 1875, 2055, 3425, 5475, 9125, 10001, 10275, 17125, 27375, 30003, 45625, 50005, 51375, 85625, 136875, 150015, 250025, 256875, 750075, 1250125, 3750375, 6250625, 18751875]

約数ペア:

[(1, 18751875), (3, 6250625), (5, 3750375), (15, 1250125), (25, 750075), (73, 256875), (75, 250025), (125, 150015), (137, 136875), (219, 85625), (365, 51375), (375, 50005), (411, 45625), (625, 30003), (685, 27375), (1095, 17125), (1825, 10275), (1875, 10001), (2055, 9125), (3425, 5475)]