1272180820

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{443}}^1\times {\mathrm{1033}}^1$

素因数の和:1624

約数の個数: 48

約数和(自身を含む): 2699484480

約数和(自身を除く): 1427303660

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 443, 556, 695, 886, 1033, 1390, 1772, 2066, 2215, 2780, 4132, 4430, 5165, 8860, 10330, 20660, 61577, 123154, 143587, 246308, 287174, 307885, 457619, 574348, 615770, 717935, 915238, 1231540, 1435870, 1830476, 2288095, 2871740, 4576190, 9152380, 63609041, 127218082, 254436164, 318045205, 636090410, 1272180820]

約数ペア:

[(1, 1272180820), (2, 636090410), (4, 318045205), (5, 254436164), (10, 127218082), (20, 63609041), (139, 9152380), (278, 4576190), (443, 2871740), (556, 2288095), (695, 1830476), (886, 1435870), (1033, 1231540), (1390, 915238), (1772, 717935), (2066, 615770), (2215, 574348), (2780, 457619), (4132, 307885), (4430, 287174), (5165, 246308), (8860, 143587), (10330, 123154), (20660, 61577)]