21146499

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 14706045

約数列:

[1, 3, 9, 11, 23, 33, 37, 69, 99, 111, 207, 251, 253, 333, 407, 753, 759, 851, 1221, 2259, 2277, 2553, 2761, 3663, 5773, 7659, 8283, 9287, 9361, 17319, 24849, 27861, 28083, 51957, 63503, 83583, 84249, 102157, 190509, 213601, 306471, 571527, 640803, 919413, 1922409, 2349611, 7048833, 21146499]

約数ペア:

[(1, 21146499), (3, 7048833), (9, 2349611), (11, 1922409), (23, 919413), (33, 640803), (37, 571527), (69, 306471), (99, 213601), (111, 190509), (207, 102157), (251, 84249), (253, 83583), (333, 63503), (407, 51957), (753, 28083), (759, 27861), (851, 24849), (1221, 17319), (2259, 9361), (2277, 9287), (2553, 8283), (2761, 7659), (3663, 5773)]