21489435

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:553

約数の個数: 64

約数和(自身を含む): 43200000

約数和(自身を除く): 21710565

約数列:

[1, 3, 5, 9, 11, 15, 27, 29, 33, 45, 55, 87, 99, 135, 145, 165, 261, 297, 319, 435, 495, 499, 783, 957, 1305, 1485, 1497, 1595, 2495, 2871, 3915, 4491, 4785, 5489, 7485, 8613, 13473, 14355, 14471, 16467, 22455, 27445, 43065, 43413, 49401, 67365, 72355, 82335, 130239, 148203, 159181, 217065, 247005, 390717, 477543, 651195, 741015, 795905, 1432629, 1953585, 2387715, 4297887, 7163145, 21489435]

約数ペア:

[(1, 21489435), (3, 7163145), (5, 4297887), (9, 2387715), (11, 1953585), (15, 1432629), (27, 795905), (29, 741015), (33, 651195), (45, 477543), (55, 390717), (87, 247005), (99, 217065), (135, 159181), (145, 148203), (165, 130239), (261, 82335), (297, 72355), (319, 67365), (435, 49401), (495, 43413), (499, 43065), (783, 27445), (957, 22455), (1305, 16467), (1485, 14471), (1497, 14355), (1595, 13473), (2495, 8613), (2871, 7485), (3915, 5489), (4491, 4785)]