21207844

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{461}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 44706816

約数和(自身を除く): 23498972

約数列:

[1, 2, 4, 7, 14, 28, 31, 53, 62, 106, 124, 212, 217, 371, 434, 461, 742, 868, 922, 1484, 1643, 1844, 3227, 3286, 6454, 6572, 11501, 12908, 14291, 23002, 24433, 28582, 46004, 48866, 57164, 97732, 100037, 171031, 200074, 342062, 400148, 684124, 757423, 1514846, 3029692, 5301961, 10603922, 21207844]

約数ペア:

[(1, 21207844), (2, 10603922), (4, 5301961), (7, 3029692), (14, 1514846), (28, 757423), (31, 684124), (53, 400148), (62, 342062), (106, 200074), (124, 171031), (212, 100037), (217, 97732), (371, 57164), (434, 48866), (461, 46004), (742, 28582), (868, 24433), (922, 23002), (1484, 14291), (1643, 12908), (1844, 11501), (3227, 6572), (3286, 6454)]