19500625

素因数分解:

$5^4\times {\mathrm{41}}^1\times {\mathrm{761}}^1$

素因数の和:822

約数の個数: 20

約数和(自身を含む): 24995124

約数和(自身を除く): 5494499

約数列:

[1, 5, 25, 41, 125, 205, 625, 761, 1025, 3805, 5125, 19025, 25625, 31201, 95125, 156005, 475625, 780025, 3900125, 19500625]

約数ペア:

[(1, 19500625), (5, 3900125), (25, 780025), (41, 475625), (125, 156005), (205, 95125), (625, 31201), (761, 25625), (1025, 19025), (3805, 5125)]