21728826

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{331}}^1\times {\mathrm{521}}^1$

素因数の和:867

約数の個数: 48

約数和(自身を含む): 54070848

約数和(自身を除く): 32342022

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 331, 521, 662, 993, 1042, 1563, 1986, 2317, 2979, 3126, 3647, 4634, 4689, 5958, 6951, 7294, 9378, 10941, 13902, 20853, 21882, 32823, 41706, 65646, 172451, 344902, 517353, 1034706, 1207157, 1552059, 2414314, 3104118, 3621471, 7242942, 10864413, 21728826]

約数ペア:

[(1, 21728826), (2, 10864413), (3, 7242942), (6, 3621471), (7, 3104118), (9, 2414314), (14, 1552059), (18, 1207157), (21, 1034706), (42, 517353), (63, 344902), (126, 172451), (331, 65646), (521, 41706), (662, 32823), (993, 21882), (1042, 20853), (1563, 13902), (1986, 10941), (2317, 9378), (2979, 7294), (3126, 6951), (3647, 5958), (4634, 4689)]