211389620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{26227}}^1$

素因数の和:26280

約数の個数: 48

約数和(自身を含む): 493506048

約数和(自身を除く): 282116428

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 26227, 52454, 104908, 131135, 262270, 340951, 524540, 681902, 813037, 1363804, 1626074, 1704755, 3252148, 3409510, 4065185, 6819020, 8130370, 10569481, 16260740, 21138962, 42277924, 52847405, 105694810, 211389620]

約数ペア:

[(1, 211389620), (2, 105694810), (4, 52847405), (5, 42277924), (10, 21138962), (13, 16260740), (20, 10569481), (26, 8130370), (31, 6819020), (52, 4065185), (62, 3409510), (65, 3252148), (124, 1704755), (130, 1626074), (155, 1363804), (260, 813037), (310, 681902), (403, 524540), (620, 340951), (806, 262270), (1612, 131135), (2015, 104908), (4030, 52454), (8060, 26227)]