53205980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{421}}^1$

素因数の和:590

約数の個数: 48

約数和(自身を含む): 114851520

約数和(自身を除く): 61645540

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 421, 445, 710, 842, 890, 1420, 1684, 1780, 2105, 4210, 6319, 8420, 12638, 25276, 29891, 31595, 37469, 59782, 63190, 74938, 119564, 126380, 149455, 149876, 187345, 298910, 374690, 597820, 749380, 2660299, 5320598, 10641196, 13301495, 26602990, 53205980]

約数ペア:

[(1, 53205980), (2, 26602990), (4, 13301495), (5, 10641196), (10, 5320598), (20, 2660299), (71, 749380), (89, 597820), (142, 374690), (178, 298910), (284, 187345), (355, 149876), (356, 149455), (421, 126380), (445, 119564), (710, 74938), (842, 63190), (890, 59782), (1420, 37469), (1684, 31595), (1780, 29891), (2105, 25276), (4210, 12638), (6319, 8420)]