291239860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{181}}^1\times {\mathrm{1871}}^1$

素因数の和:2104

約数の個数: 48

約数和(自身を含む): 629620992

約数和(自身を除く): 338381132

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 181, 215, 362, 430, 724, 860, 905, 1810, 1871, 3620, 3742, 7484, 7783, 9355, 15566, 18710, 31132, 37420, 38915, 77830, 80453, 155660, 160906, 321812, 338651, 402265, 677302, 804530, 1354604, 1609060, 1693255, 3386510, 6773020, 14561993, 29123986, 58247972, 72809965, 145619930, 291239860]

約数ペア:

[(1, 291239860), (2, 145619930), (4, 72809965), (5, 58247972), (10, 29123986), (20, 14561993), (43, 6773020), (86, 3386510), (172, 1693255), (181, 1609060), (215, 1354604), (362, 804530), (430, 677302), (724, 402265), (860, 338651), (905, 321812), (1810, 160906), (1871, 155660), (3620, 80453), (3742, 77830), (7484, 38915), (7783, 37420), (9355, 31132), (15566, 18710)]