21446649

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{41}}^1$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 39940992

約数和(自身を除く): 18494343

約数列:

[1, 3, 7, 9, 19, 21, 23, 41, 57, 63, 69, 123, 133, 161, 171, 207, 287, 361, 369, 399, 437, 483, 779, 861, 943, 1083, 1197, 1311, 1449, 2337, 2527, 2583, 2829, 3059, 3249, 3933, 5453, 6601, 7011, 7581, 8303, 8487, 9177, 14801, 16359, 17917, 19803, 22743, 24909, 27531, 44403, 49077, 53751, 58121, 59409, 74727, 103607, 125419, 133209, 161253, 174363, 310821, 340423, 376257, 523089, 932463, 1021269, 1128771, 2382961, 3063807, 7148883, 21446649]

約数ペア:

[(1, 21446649), (3, 7148883), (7, 3063807), (9, 2382961), (19, 1128771), (21, 1021269), (23, 932463), (41, 523089), (57, 376257), (63, 340423), (69, 310821), (123, 174363), (133, 161253), (161, 133209), (171, 125419), (207, 103607), (287, 74727), (361, 59409), (369, 58121), (399, 53751), (437, 49077), (483, 44403), (779, 27531), (861, 24909), (943, 22743), (1083, 19803), (1197, 17917), (1311, 16359), (1449, 14801), (2337, 9177), (2527, 8487), (2583, 8303), (2829, 7581), (3059, 7011), (3249, 6601), (3933, 5453)]