9991250

素因数分解:

$2^1\times 5^4\times {\mathrm{7993}}^1$

素因数の和:8015

約数の個数: 20

約数和(自身を含む): 18729942

約数和(自身を除く): 8738692

約数列:

[1, 2, 5, 10, 25, 50, 125, 250, 625, 1250, 7993, 15986, 39965, 79930, 199825, 399650, 999125, 1998250, 4995625, 9991250]

約数ペア:

[(1, 9991250), (2, 4995625), (5, 1998250), (10, 999125), (25, 399650), (50, 199825), (125, 79930), (250, 39965), (625, 15986), (1250, 7993)]