28201910

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:269

約数の個数: 64

約数和(自身を含む): 58973184

約数和(自身を除く): 30771274

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 71, 110, 115, 142, 157, 230, 253, 314, 355, 506, 710, 781, 785, 1265, 1562, 1570, 1633, 1727, 2530, 3266, 3454, 3611, 3905, 7222, 7810, 8165, 8635, 11147, 16330, 17270, 17963, 18055, 22294, 35926, 36110, 39721, 55735, 79442, 89815, 111470, 122617, 179630, 198605, 245234, 256381, 397210, 512762, 613085, 1226170, 1281905, 2563810, 2820191, 5640382, 14100955, 28201910]

約数ペア:

[(1, 28201910), (2, 14100955), (5, 5640382), (10, 2820191), (11, 2563810), (22, 1281905), (23, 1226170), (46, 613085), (55, 512762), (71, 397210), (110, 256381), (115, 245234), (142, 198605), (157, 179630), (230, 122617), (253, 111470), (314, 89815), (355, 79442), (506, 55735), (710, 39721), (781, 36110), (785, 35926), (1265, 22294), (1562, 18055), (1570, 17963), (1633, 17270), (1727, 16330), (2530, 11147), (3266, 8635), (3454, 8165), (3611, 7810), (3905, 7222)]