20991950

素因数分解:

$2^1\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1621}}^1$

素因数の和:1677

約数の個数: 48

約数和(自身を含む): 45857184

約数和(自身を除く): 24865234

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 37, 50, 70, 74, 175, 185, 259, 350, 370, 518, 925, 1295, 1621, 1850, 2590, 3242, 6475, 8105, 11347, 12950, 16210, 22694, 40525, 56735, 59977, 81050, 113470, 119954, 283675, 299885, 419839, 567350, 599770, 839678, 1499425, 2099195, 2998850, 4198390, 10495975, 20991950]

約数ペア:

[(1, 20991950), (2, 10495975), (5, 4198390), (7, 2998850), (10, 2099195), (14, 1499425), (25, 839678), (35, 599770), (37, 567350), (50, 419839), (70, 299885), (74, 283675), (175, 119954), (185, 113470), (259, 81050), (350, 59977), (370, 56735), (518, 40525), (925, 22694), (1295, 16210), (1621, 12950), (1850, 11347), (2590, 8105), (3242, 6475)]