28376180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1291}}^1$

素因数の和:1464

約数の個数: 48

約数和(自身を含む): 68589696

約数和(自身を除く): 40213516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1291, 1570, 2198, 2582, 3140, 4396, 5164, 5495, 6455, 9037, 10990, 12910, 18074, 21980, 25820, 36148, 45185, 90370, 180740, 202687, 405374, 810748, 1013435, 1418809, 2026870, 2837618, 4053740, 5675236, 7094045, 14188090, 28376180]

約数ペア:

[(1, 28376180), (2, 14188090), (4, 7094045), (5, 5675236), (7, 4053740), (10, 2837618), (14, 2026870), (20, 1418809), (28, 1013435), (35, 810748), (70, 405374), (140, 202687), (157, 180740), (314, 90370), (628, 45185), (785, 36148), (1099, 25820), (1291, 21980), (1570, 18074), (2198, 12910), (2582, 10990), (3140, 9037), (4396, 6455), (5164, 5495)]