21582015

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{163}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 43201536

約数和(自身を除く): 21619521

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 97, 105, 163, 195, 273, 291, 455, 485, 489, 679, 815, 1141, 1261, 1365, 1455, 2037, 2119, 2445, 3395, 3423, 3783, 5705, 6305, 6357, 8827, 10185, 10595, 14833, 15811, 17115, 18915, 26481, 31785, 44135, 44499, 47433, 74165, 79055, 110677, 132405, 205543, 222495, 237165, 332031, 553385, 616629, 1027715, 1438801, 1660155, 3083145, 4316403, 7194005, 21582015]

約数ペア:

[(1, 21582015), (3, 7194005), (5, 4316403), (7, 3083145), (13, 1660155), (15, 1438801), (21, 1027715), (35, 616629), (39, 553385), (65, 332031), (91, 237165), (97, 222495), (105, 205543), (163, 132405), (195, 110677), (273, 79055), (291, 74165), (455, 47433), (485, 44499), (489, 44135), (679, 31785), (815, 26481), (1141, 18915), (1261, 17115), (1365, 15811), (1455, 14833), (2037, 10595), (2119, 10185), (2445, 8827), (3395, 6357), (3423, 6305), (3783, 5705)]