30878980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{1447}}^1$

素因数の和:1564

約数の個数: 48

約数和(自身を含む): 71519616

約数和(自身を除く): 40640636

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 970, 1067, 1447, 1940, 2134, 2894, 4268, 5335, 5788, 7235, 10670, 14470, 15917, 21340, 28940, 31834, 63668, 79585, 140359, 159170, 280718, 318340, 561436, 701795, 1403590, 1543949, 2807180, 3087898, 6175796, 7719745, 15439490, 30878980]

約数ペア:

[(1, 30878980), (2, 15439490), (4, 7719745), (5, 6175796), (10, 3087898), (11, 2807180), (20, 1543949), (22, 1403590), (44, 701795), (55, 561436), (97, 318340), (110, 280718), (194, 159170), (220, 140359), (388, 79585), (485, 63668), (970, 31834), (1067, 28940), (1447, 21340), (1940, 15917), (2134, 14470), (2894, 10670), (4268, 7235), (5335, 5788)]