90840940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{1993}}^1$

素因数の和:2098

約数の個数: 48

約数和(自身を含む): 198985248

約数和(自身を除く): 108144308

約数列:

[1, 2, 4, 5, 10, 20, 43, 53, 86, 106, 172, 212, 215, 265, 430, 530, 860, 1060, 1993, 2279, 3986, 4558, 7972, 9116, 9965, 11395, 19930, 22790, 39860, 45580, 85699, 105629, 171398, 211258, 342796, 422516, 428495, 528145, 856990, 1056290, 1713980, 2112580, 4542047, 9084094, 18168188, 22710235, 45420470, 90840940]

約数ペア:

[(1, 90840940), (2, 45420470), (4, 22710235), (5, 18168188), (10, 9084094), (20, 4542047), (43, 2112580), (53, 1713980), (86, 1056290), (106, 856990), (172, 528145), (212, 428495), (215, 422516), (265, 342796), (430, 211258), (530, 171398), (860, 105629), (1060, 85699), (1993, 45580), (2279, 39860), (3986, 22790), (4558, 19930), (7972, 11395), (9116, 9965)]