18464920

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4759}}^1$

素因数の和:4867

約数の個数: 32

約数和(自身を含む): 41983200

約数和(自身を除く): 23518280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4759, 9518, 19036, 23795, 38072, 47590, 95180, 190360, 461623, 923246, 1846492, 2308115, 3692984, 4616230, 9232460, 18464920]

約数ペア:

[(1, 18464920), (2, 9232460), (4, 4616230), (5, 3692984), (8, 2308115), (10, 1846492), (20, 923246), (40, 461623), (97, 190360), (194, 95180), (388, 47590), (485, 38072), (776, 23795), (970, 19036), (1940, 9518), (3880, 4759)]