28961875

素因数分解:

$5^4\times {\mathrm{149}}^1\times {\mathrm{311}}^1$

素因数の和:480

約数の個数: 20

約数和(自身を含む): 36550800

約数和(自身を除く): 7588925

約数列:

[1, 5, 25, 125, 149, 311, 625, 745, 1555, 3725, 7775, 18625, 38875, 46339, 93125, 194375, 231695, 1158475, 5792375, 28961875]

約数ペア:

[(1, 28961875), (5, 5792375), (25, 1158475), (125, 231695), (149, 194375), (311, 93125), (625, 46339), (745, 38875), (1555, 18625), (3725, 7775)]