21840741

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{157}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 36232560

約数和(自身を除く): 14391819

約数列:

[1, 3, 9, 13, 29, 39, 41, 87, 117, 123, 157, 261, 369, 377, 471, 533, 1131, 1189, 1413, 1599, 2041, 3393, 3567, 4553, 4797, 6123, 6437, 10701, 13659, 15457, 18369, 19311, 40977, 46371, 57933, 59189, 83681, 139113, 177567, 186673, 251043, 532701, 560019, 753129, 1680057, 2426749, 7280247, 21840741]

約数ペア:

[(1, 21840741), (3, 7280247), (9, 2426749), (13, 1680057), (29, 753129), (39, 560019), (41, 532701), (87, 251043), (117, 186673), (123, 177567), (157, 139113), (261, 83681), (369, 59189), (377, 57933), (471, 46371), (533, 40977), (1131, 19311), (1189, 18369), (1413, 15457), (1599, 13659), (2041, 10701), (3393, 6437), (3567, 6123), (4553, 4797)]