21097700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{16229}}^1$

素因数の和:16256

約数の個数: 36

約数和(自身を含む): 49306740

約数和(自身を除く): 28209040

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 16229, 32458, 64916, 81145, 162290, 210977, 324580, 405725, 421954, 811450, 843908, 1054885, 1622900, 2109770, 4219540, 5274425, 10548850, 21097700]

約数ペア:

[(1, 21097700), (2, 10548850), (4, 5274425), (5, 4219540), (10, 2109770), (13, 1622900), (20, 1054885), (25, 843908), (26, 811450), (50, 421954), (52, 405725), (65, 324580), (100, 210977), (130, 162290), (260, 81145), (325, 64916), (650, 32458), (1300, 16229)]