20689240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3617}}^1$

素因数の和:3652

約数の個数: 64

約数和(自身を含む): 54704160

約数和(自身を除く): 34014920

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 3617, 5720, 7234, 14468, 18085, 28936, 36170, 39787, 47021, 72340, 79574, 94042, 144680, 159148, 188084, 198935, 235105, 318296, 376168, 397870, 470210, 517231, 795740, 940420, 1034462, 1591480, 1880840, 2068924, 2586155, 4137848, 5172310, 10344620, 20689240]

約数ペア:

[(1, 20689240), (2, 10344620), (4, 5172310), (5, 4137848), (8, 2586155), (10, 2068924), (11, 1880840), (13, 1591480), (20, 1034462), (22, 940420), (26, 795740), (40, 517231), (44, 470210), (52, 397870), (55, 376168), (65, 318296), (88, 235105), (104, 198935), (110, 188084), (130, 159148), (143, 144680), (220, 94042), (260, 79574), (286, 72340), (440, 47021), (520, 39787), (572, 36170), (715, 28936), (1144, 18085), (1430, 14468), (2860, 7234), (3617, 5720)]