21177758

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{277}}^1$

素因数の和:456

約数の個数: 32

約数和(自身を含む): 37576704

約数和(自身を除く): 16398946

約数列:

[1, 2, 7, 14, 43, 86, 127, 254, 277, 301, 554, 602, 889, 1778, 1939, 3878, 5461, 10922, 11911, 23822, 35179, 38227, 70358, 76454, 83377, 166754, 246253, 492506, 1512697, 3025394, 10588879, 21177758]

約数ペア:

[(1, 21177758), (2, 10588879), (7, 3025394), (14, 1512697), (43, 492506), (86, 246253), (127, 166754), (254, 83377), (277, 76454), (301, 70358), (554, 38227), (602, 35179), (889, 23822), (1778, 11911), (1939, 10922), (3878, 5461)]