521570260

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{4127}}^1$

素因数の和:4296

約数の個数: 48

約数和(自身を含む): 1123476480

約数和(自身を除く): 601906220

約数列:

[1, 2, 4, 5, 10, 20, 71, 89, 142, 178, 284, 355, 356, 445, 710, 890, 1420, 1780, 4127, 6319, 8254, 12638, 16508, 20635, 25276, 31595, 41270, 63190, 82540, 126380, 293017, 367303, 586034, 734606, 1172068, 1465085, 1469212, 1836515, 2930170, 3673030, 5860340, 7346060, 26078513, 52157026, 104314052, 130392565, 260785130, 521570260]

約数ペア:

[(1, 521570260), (2, 260785130), (4, 130392565), (5, 104314052), (10, 52157026), (20, 26078513), (71, 7346060), (89, 5860340), (142, 3673030), (178, 2930170), (284, 1836515), (355, 1469212), (356, 1465085), (445, 1172068), (710, 734606), (890, 586034), (1420, 367303), (1780, 293017), (4127, 126380), (6319, 82540), (8254, 63190), (12638, 41270), (16508, 31595), (20635, 25276)]