21300375

素因数分解:

$3^1\times 5^3\times {\mathrm{79}}^1\times {\mathrm{719}}^1$

素因数の和:816

約数の個数: 32

約数和(自身を含む): 35942400

約数和(自身を除く): 14642025

約数列:

[1, 3, 5, 15, 25, 75, 79, 125, 237, 375, 395, 719, 1185, 1975, 2157, 3595, 5925, 9875, 10785, 17975, 29625, 53925, 56801, 89875, 170403, 269625, 284005, 852015, 1420025, 4260075, 7100125, 21300375]

約数ペア:

[(1, 21300375), (3, 7100125), (5, 4260075), (15, 1420025), (25, 852015), (75, 284005), (79, 269625), (125, 170403), (237, 89875), (375, 56801), (395, 53925), (719, 29625), (1185, 17975), (1975, 10785), (2157, 9875), (3595, 5925)]