20678438

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:340

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 14313562

約数列:

[1, 2, 11, 22, 59, 89, 118, 178, 179, 358, 649, 979, 1298, 1958, 1969, 3938, 5251, 10502, 10561, 15931, 21122, 31862, 57761, 115522, 116171, 175241, 232342, 350482, 939929, 1879858, 10339219, 20678438]

約数ペア:

[(1, 20678438), (2, 10339219), (11, 1879858), (22, 939929), (59, 350482), (89, 232342), (118, 175241), (178, 116171), (179, 115522), (358, 57761), (649, 31862), (979, 21122), (1298, 15931), (1958, 10561), (1969, 10502), (3938, 5251)]