28218925

素因数分解:

$5^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1427}}^1$

素因数の和:1557

約数の個数: 24

約数和(自身を含む): 40372416

約数和(自身を除く): 12153491

約数列:

[1, 5, 7, 25, 35, 113, 175, 565, 791, 1427, 2825, 3955, 7135, 9989, 19775, 35675, 49945, 161251, 249725, 806255, 1128757, 4031275, 5643785, 28218925]

約数ペア:

[(1, 28218925), (5, 5643785), (7, 4031275), (25, 1128757), (35, 806255), (113, 249725), (175, 161251), (565, 49945), (791, 35675), (1427, 19775), (2825, 9989), (3955, 7135)]