201631280

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{28319}}^1$

素因数の和:28421

約数の個数: 40

約数和(自身を含む): 474076800

約数和(自身を除く): 272445520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 28319, 56638, 113276, 141595, 226552, 283190, 453104, 566380, 1132760, 2265520, 2520391, 5040782, 10081564, 12601955, 20163128, 25203910, 40326256, 50407820, 100815640, 201631280]

約数ペア:

[(1, 201631280), (2, 100815640), (4, 50407820), (5, 40326256), (8, 25203910), (10, 20163128), (16, 12601955), (20, 10081564), (40, 5040782), (80, 2520391), (89, 2265520), (178, 1132760), (356, 566380), (445, 453104), (712, 283190), (890, 226552), (1424, 141595), (1780, 113276), (3560, 56638), (7120, 28319)]