20909830

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{2617}}^1$

素因数の和:2688

約数の個数: 32

約数和(自身を含む): 40715136

約数和(自身を除く): 19805306

約数列:

[1, 2, 5, 10, 17, 34, 47, 85, 94, 170, 235, 470, 799, 1598, 2617, 3995, 5234, 7990, 13085, 26170, 44489, 88978, 122999, 222445, 245998, 444890, 614995, 1229990, 2090983, 4181966, 10454915, 20909830]

約数ペア:

[(1, 20909830), (2, 10454915), (5, 4181966), (10, 2090983), (17, 1229990), (34, 614995), (47, 444890), (85, 245998), (94, 222445), (170, 122999), (235, 88978), (470, 44489), (799, 26170), (1598, 13085), (2617, 7990), (3995, 5234)]