28768360

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8081}}^1$

素因数の和:8181

約数の個数: 32

約数和(自身を含む): 65464200

約数和(自身を除く): 36695840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 8081, 16162, 32324, 40405, 64648, 80810, 161620, 323240, 719209, 1438418, 2876836, 3596045, 5753672, 7192090, 14384180, 28768360]

約数ペア:

[(1, 28768360), (2, 14384180), (4, 7192090), (5, 5753672), (8, 3596045), (10, 2876836), (20, 1438418), (40, 719209), (89, 323240), (178, 161620), (356, 80810), (445, 64648), (712, 40405), (890, 32324), (1780, 16162), (3560, 8081)]