21874375

素因数分解:

$5^4\times {\mathrm{31}}^1\times {\mathrm{1129}}^1$

素因数の和:1180

約数の個数: 20

約数和(自身を含む): 28240960

約数和(自身を除く): 6366585

約数列:

[1, 5, 25, 31, 125, 155, 625, 775, 1129, 3875, 5645, 19375, 28225, 34999, 141125, 174995, 705625, 874975, 4374875, 21874375]

約数ペア:

[(1, 21874375), (5, 4374875), (25, 874975), (31, 705625), (125, 174995), (155, 141125), (625, 34999), (775, 28225), (1129, 19375), (3875, 5645)]