21563073

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{181}}^1$

素因数の和:286

約数の個数: 48

約数和(自身を含む): 37553152

約数和(自身を除く): 15990079

約数列:

[1, 3, 7, 9, 21, 31, 61, 63, 93, 181, 183, 217, 279, 427, 543, 549, 651, 1267, 1281, 1629, 1891, 1953, 3801, 3843, 5611, 5673, 11041, 11403, 13237, 16833, 17019, 33123, 39277, 39711, 50499, 77287, 99369, 117831, 119133, 231861, 342271, 353493, 695583, 1026813, 2395897, 3080439, 7187691, 21563073]

約数ペア:

[(1, 21563073), (3, 7187691), (7, 3080439), (9, 2395897), (21, 1026813), (31, 695583), (61, 353493), (63, 342271), (93, 231861), (181, 119133), (183, 117831), (217, 99369), (279, 77287), (427, 50499), (543, 39711), (549, 39277), (651, 33123), (1267, 17019), (1281, 16833), (1629, 13237), (1891, 11403), (1953, 11041), (3801, 5673), (3843, 5611)]