20123475

素因数分解:

$3^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{1709}}^1$

素因数の和:1879

約数の個数: 24

約数和(自身を含む): 33502320

約数和(自身を除く): 13378845

約数列:

[1, 3, 5, 15, 25, 75, 157, 471, 785, 1709, 2355, 3925, 5127, 8545, 11775, 25635, 42725, 128175, 268313, 804939, 1341565, 4024695, 6707825, 20123475]

約数ペア:

[(1, 20123475), (3, 6707825), (5, 4024695), (15, 1341565), (25, 804939), (75, 268313), (157, 128175), (471, 42725), (785, 25635), (1709, 11775), (2355, 8545), (3925, 5127)]