20281780510

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1\times {\mathrm{394357}}^1$

素因数の和:394540

約数の個数: 32

約数和(自身を含む): 37763722080

約数和(自身を除く): 17481941570

約数列:

[1, 2, 5, 10, 37, 74, 139, 185, 278, 370, 695, 1390, 5143, 10286, 25715, 51430, 394357, 788714, 1971785, 3943570, 14591209, 29182418, 54815623, 72956045, 109631246, 145912090, 274078115, 548156230, 2028178051, 4056356102, 10140890255, 20281780510]

約数ペア:

[(1, 20281780510), (2, 10140890255), (5, 4056356102), (10, 2028178051), (37, 548156230), (74, 274078115), (139, 145912090), (185, 109631246), (278, 72956045), (370, 54815623), (695, 29182418), (1390, 14591209), (5143, 3943570), (10286, 1971785), (25715, 788714), (51430, 394357)]