457381820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{20809}}^1$

素因数の和:20982

約数の個数: 48

約数和(自身を含む): 1104761280

約数和(自身を除く): 647379460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1570, 2198, 3140, 4396, 5495, 10990, 20809, 21980, 41618, 83236, 104045, 145663, 208090, 291326, 416180, 582652, 728315, 1456630, 2913260, 3267013, 6534026, 13068052, 16335065, 22869091, 32670130, 45738182, 65340260, 91476364, 114345455, 228690910, 457381820]

約数ペア:

[(1, 457381820), (2, 228690910), (4, 114345455), (5, 91476364), (7, 65340260), (10, 45738182), (14, 32670130), (20, 22869091), (28, 16335065), (35, 13068052), (70, 6534026), (140, 3267013), (157, 2913260), (314, 1456630), (628, 728315), (785, 582652), (1099, 416180), (1570, 291326), (2198, 208090), (3140, 145663), (4396, 104045), (5495, 83236), (10990, 41618), (20809, 21980)]