18972540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{967}}^1$

素因数の和:1091

約数の個数: 72

約数和(自身を含む): 58138080

約数和(自身を除く): 39165540

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 967, 981, 1090, 1308, 1635, 1934, 1962, 2180, 2901, 3270, 3868, 3924, 4835, 4905, 5802, 6540, 8703, 9670, 9810, 11604, 14505, 17406, 19340, 19620, 29010, 34812, 43515, 58020, 87030, 105403, 174060, 210806, 316209, 421612, 527015, 632418, 948627, 1054030, 1264836, 1581045, 1897254, 2108060, 3162090, 3794508, 4743135, 6324180, 9486270, 18972540]

約数ペア:

[(1, 18972540), (2, 9486270), (3, 6324180), (4, 4743135), (5, 3794508), (6, 3162090), (9, 2108060), (10, 1897254), (12, 1581045), (15, 1264836), (18, 1054030), (20, 948627), (30, 632418), (36, 527015), (45, 421612), (60, 316209), (90, 210806), (109, 174060), (180, 105403), (218, 87030), (327, 58020), (436, 43515), (545, 34812), (654, 29010), (967, 19620), (981, 19340), (1090, 17406), (1308, 14505), (1635, 11604), (1934, 9810), (1962, 9670), (2180, 8703), (2901, 6540), (3270, 5802), (3868, 4905), (3924, 4835)]