20472240

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{433}}^1$

素因数の和:646

約数の個数: 80

約数和(自身を含む): 63933408

約数和(自身を除く): 43461168

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 197, 240, 394, 433, 591, 788, 866, 985, 1182, 1299, 1576, 1732, 1970, 2165, 2364, 2598, 2955, 3152, 3464, 3940, 4330, 4728, 5196, 5910, 6495, 6928, 7880, 8660, 9456, 10392, 11820, 12990, 15760, 17320, 20784, 23640, 25980, 34640, 47280, 51960, 85301, 103920, 170602, 255903, 341204, 426505, 511806, 682408, 853010, 1023612, 1279515, 1364816, 1706020, 2047224, 2559030, 3412040, 4094448, 5118060, 6824080, 10236120, 20472240]

約数ペア:

[(1, 20472240), (2, 10236120), (3, 6824080), (4, 5118060), (5, 4094448), (6, 3412040), (8, 2559030), (10, 2047224), (12, 1706020), (15, 1364816), (16, 1279515), (20, 1023612), (24, 853010), (30, 682408), (40, 511806), (48, 426505), (60, 341204), (80, 255903), (120, 170602), (197, 103920), (240, 85301), (394, 51960), (433, 47280), (591, 34640), (788, 25980), (866, 23640), (985, 20784), (1182, 17320), (1299, 15760), (1576, 12990), (1732, 11820), (1970, 10392), (2165, 9456), (2364, 8660), (2598, 7880), (2955, 6928), (3152, 6495), (3464, 5910), (3940, 5196), (4330, 4728)]