20111280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{11971}}^1$

素因数の和:11994

約数の個数: 80

約数和(自身を含む): 71257344

約数和(自身を除く): 51146064

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 11971, 23942, 35913, 47884, 59855, 71826, 83797, 95768, 119710, 143652, 167594, 179565, 191536, 239420, 251391, 287304, 335188, 359130, 418985, 478840, 502782, 574608, 670376, 718260, 837970, 957680, 1005564, 1256955, 1340752, 1436520, 1675940, 2011128, 2513910, 2873040, 3351880, 4022256, 5027820, 6703760, 10055640, 20111280]

約数ペア:

[(1, 20111280), (2, 10055640), (3, 6703760), (4, 5027820), (5, 4022256), (6, 3351880), (7, 2873040), (8, 2513910), (10, 2011128), (12, 1675940), (14, 1436520), (15, 1340752), (16, 1256955), (20, 1005564), (21, 957680), (24, 837970), (28, 718260), (30, 670376), (35, 574608), (40, 502782), (42, 478840), (48, 418985), (56, 359130), (60, 335188), (70, 287304), (80, 251391), (84, 239420), (105, 191536), (112, 179565), (120, 167594), (140, 143652), (168, 119710), (210, 95768), (240, 83797), (280, 71826), (336, 59855), (420, 47884), (560, 35913), (840, 23942), (1680, 11971)]