20829016

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 45158400

約数和(自身を除く): 24329384

約数列:

[1, 2, 4, 8, 13, 19, 26, 38, 52, 76, 83, 104, 127, 152, 166, 247, 254, 332, 494, 508, 664, 988, 1016, 1079, 1577, 1651, 1976, 2158, 2413, 3154, 3302, 4316, 4826, 6308, 6604, 8632, 9652, 10541, 12616, 13208, 19304, 20501, 21082, 31369, 41002, 42164, 62738, 82004, 84328, 125476, 137033, 164008, 200279, 250952, 274066, 400558, 548132, 801116, 1096264, 1602232, 2603627, 5207254, 10414508, 20829016]

約数ペア:

[(1, 20829016), (2, 10414508), (4, 5207254), (8, 2603627), (13, 1602232), (19, 1096264), (26, 801116), (38, 548132), (52, 400558), (76, 274066), (83, 250952), (104, 200279), (127, 164008), (152, 137033), (166, 125476), (247, 84328), (254, 82004), (332, 62738), (494, 42164), (508, 41002), (664, 31369), (988, 21082), (1016, 20501), (1079, 19304), (1577, 13208), (1651, 12616), (1976, 10541), (2158, 9652), (2413, 8632), (3154, 6604), (3302, 6308), (4316, 4826)]