18566440

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{11321}}^1$

素因数の和:11373

約数の個数: 32

約数和(自身を含む): 42797160

約数和(自身を除く): 24230720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 11321, 22642, 45284, 56605, 90568, 113210, 226420, 452840, 464161, 928322, 1856644, 2320805, 3713288, 4641610, 9283220, 18566440]

約数ペア:

[(1, 18566440), (2, 9283220), (4, 4641610), (5, 3713288), (8, 2320805), (10, 1856644), (20, 928322), (40, 464161), (41, 452840), (82, 226420), (164, 113210), (205, 90568), (328, 56605), (410, 45284), (820, 22642), (1640, 11321)]