21347875

素因数分解:

$5^3\times {\mathrm{67}}^1\times {\mathrm{2549}}^1$

素因数の和:2631

約数の個数: 16

約数和(自身を含む): 27050400

約数和(自身を除く): 5702525

約数列:

[1, 5, 25, 67, 125, 335, 1675, 2549, 8375, 12745, 63725, 170783, 318625, 853915, 4269575, 21347875]

約数ペア:

[(1, 21347875), (5, 4269575), (25, 853915), (67, 318625), (125, 170783), (335, 63725), (1675, 12745), (2549, 8375)]