2108697625

素因数分解:

$5^3\times {\mathrm{79}}^1\times {\mathrm{213539}}^1$

素因数の和:213633

約数の個数: 16

約数和(自身を含む): 2664979200

約数和(自身を除く): 556281575

約数列:

[1, 5, 25, 79, 125, 395, 1975, 9875, 213539, 1067695, 5338475, 16869581, 26692375, 84347905, 421739525, 2108697625]

約数ペア:

[(1, 2108697625), (5, 421739525), (25, 84347905), (79, 26692375), (125, 16869581), (395, 5338475), (1975, 1067695), (9875, 213539)]