21902210

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{787}}^1$

素因数の和:839

約数の個数: 48

約数和(自身を含む): 45275328

約数和(自身を除く): 23373118

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 121, 230, 242, 253, 506, 605, 787, 1210, 1265, 1574, 2530, 2783, 3935, 5566, 7870, 8657, 13915, 17314, 18101, 27830, 36202, 43285, 86570, 90505, 95227, 181010, 190454, 199111, 398222, 476135, 952270, 995555, 1991110, 2190221, 4380442, 10951105, 21902210]

約数ペア:

[(1, 21902210), (2, 10951105), (5, 4380442), (10, 2190221), (11, 1991110), (22, 995555), (23, 952270), (46, 476135), (55, 398222), (110, 199111), (115, 190454), (121, 181010), (230, 95227), (242, 90505), (253, 86570), (506, 43285), (605, 36202), (787, 27830), (1210, 18101), (1265, 17314), (1574, 13915), (2530, 8657), (2783, 7870), (3935, 5566)]