18416420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{863}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 24258268

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 194, 220, 388, 485, 863, 970, 1067, 1726, 1940, 2134, 3452, 4268, 4315, 5335, 8630, 9493, 10670, 17260, 18986, 21340, 37972, 47465, 83711, 94930, 167422, 189860, 334844, 418555, 837110, 920821, 1674220, 1841642, 3683284, 4604105, 9208210, 18416420]

約数ペア:

[(1, 18416420), (2, 9208210), (4, 4604105), (5, 3683284), (10, 1841642), (11, 1674220), (20, 920821), (22, 837110), (44, 418555), (55, 334844), (97, 189860), (110, 167422), (194, 94930), (220, 83711), (388, 47465), (485, 37972), (863, 21340), (970, 18986), (1067, 17260), (1726, 10670), (1940, 9493), (2134, 8630), (3452, 5335), (4268, 4315)]