21281463

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{773}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 38638080

約数和(自身を除く): 17356617

約数列:

[1, 3, 7, 9, 19, 21, 23, 57, 63, 69, 133, 161, 171, 207, 399, 437, 483, 773, 1197, 1311, 1449, 2319, 3059, 3933, 5411, 6957, 9177, 14687, 16233, 17779, 27531, 44061, 48699, 53337, 102809, 124453, 132183, 160011, 308427, 337801, 373359, 925281, 1013403, 1120077, 2364607, 3040209, 7093821, 21281463]

約数ペア:

[(1, 21281463), (3, 7093821), (7, 3040209), (9, 2364607), (19, 1120077), (21, 1013403), (23, 925281), (57, 373359), (63, 337801), (69, 308427), (133, 160011), (161, 132183), (171, 124453), (207, 102809), (399, 53337), (437, 48699), (483, 44061), (773, 27531), (1197, 17779), (1311, 16233), (1449, 14687), (2319, 9177), (3059, 6957), (3933, 5411)]