18009860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1153}}^1$

素因数の和:1244

約数の個数: 48

約数和(自身を含む): 41876352

約数和(自身を除く): 23866492

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1153, 1420, 1562, 2306, 3124, 3905, 4612, 5765, 7810, 11530, 12683, 15620, 23060, 25366, 50732, 63415, 81863, 126830, 163726, 253660, 327452, 409315, 818630, 900493, 1637260, 1800986, 3601972, 4502465, 9004930, 18009860]

約数ペア:

[(1, 18009860), (2, 9004930), (4, 4502465), (5, 3601972), (10, 1800986), (11, 1637260), (20, 900493), (22, 818630), (44, 409315), (55, 327452), (71, 253660), (110, 163726), (142, 126830), (220, 81863), (284, 63415), (355, 50732), (710, 25366), (781, 23060), (1153, 15620), (1420, 12683), (1562, 11530), (2306, 7810), (3124, 5765), (3905, 4612)]