21570950

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 41902080

約数和(自身を除く): 20331130

約数列:

[1, 2, 5, 10, 25, 43, 50, 79, 86, 127, 158, 215, 254, 395, 430, 635, 790, 1075, 1270, 1975, 2150, 3175, 3397, 3950, 5461, 6350, 6794, 10033, 10922, 16985, 20066, 27305, 33970, 50165, 54610, 84925, 100330, 136525, 169850, 250825, 273050, 431419, 501650, 862838, 2157095, 4314190, 10785475, 21570950]

約数ペア:

[(1, 21570950), (2, 10785475), (5, 4314190), (10, 2157095), (25, 862838), (43, 501650), (50, 431419), (79, 273050), (86, 250825), (127, 169850), (158, 136525), (215, 100330), (254, 84925), (395, 54610), (430, 50165), (635, 33970), (790, 27305), (1075, 20066), (1270, 16985), (1975, 10922), (2150, 10033), (3175, 6794), (3397, 6350), (3950, 5461)]