18867620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{263}}^1$

素因数の和:500

約数の個数: 48

約数和(自身を含む): 42311808

約数和(自身を除く): 23444188

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 211, 263, 340, 422, 526, 844, 1052, 1055, 1315, 2110, 2630, 3587, 4220, 4471, 5260, 7174, 8942, 14348, 17884, 17935, 22355, 35870, 44710, 55493, 71740, 89420, 110986, 221972, 277465, 554930, 943381, 1109860, 1886762, 3773524, 4716905, 9433810, 18867620]

約数ペア:

[(1, 18867620), (2, 9433810), (4, 4716905), (5, 3773524), (10, 1886762), (17, 1109860), (20, 943381), (34, 554930), (68, 277465), (85, 221972), (170, 110986), (211, 89420), (263, 71740), (340, 55493), (422, 44710), (526, 35870), (844, 22355), (1052, 17935), (1055, 17884), (1315, 14348), (2110, 8942), (2630, 7174), (3587, 5260), (4220, 4471)]