20921325

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{9619}}^1$

素因数の和:9661

約数の個数: 24

約数和(自身を含む): 35786400

約数和(自身を除く): 14865075

約数列:

[1, 3, 5, 15, 25, 29, 75, 87, 145, 435, 725, 2175, 9619, 28857, 48095, 144285, 240475, 278951, 721425, 836853, 1394755, 4184265, 6973775, 20921325]

約数ペア:

[(1, 20921325), (3, 6973775), (5, 4184265), (15, 1394755), (25, 836853), (29, 721425), (75, 278951), (87, 240475), (145, 144285), (435, 48095), (725, 28857), (2175, 9619)]