18504080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{191}}^1$

素因数の和:384

約数の個数: 80

約数和(自身を含む): 49711104

約数和(自身を除く): 31207024

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 173, 191, 280, 346, 382, 560, 692, 764, 865, 955, 1211, 1337, 1384, 1528, 1730, 1910, 2422, 2674, 2768, 3056, 3460, 3820, 4844, 5348, 6055, 6685, 6920, 7640, 9688, 10696, 12110, 13370, 13840, 15280, 19376, 21392, 24220, 26740, 33043, 48440, 53480, 66086, 96880, 106960, 132172, 165215, 231301, 264344, 330430, 462602, 528688, 660860, 925204, 1156505, 1321720, 1850408, 2313010, 2643440, 3700816, 4626020, 9252040, 18504080]

約数ペア:

[(1, 18504080), (2, 9252040), (4, 4626020), (5, 3700816), (7, 2643440), (8, 2313010), (10, 1850408), (14, 1321720), (16, 1156505), (20, 925204), (28, 660860), (35, 528688), (40, 462602), (56, 330430), (70, 264344), (80, 231301), (112, 165215), (140, 132172), (173, 106960), (191, 96880), (280, 66086), (346, 53480), (382, 48440), (560, 33043), (692, 26740), (764, 24220), (865, 21392), (955, 19376), (1211, 15280), (1337, 13840), (1384, 13370), (1528, 12110), (1730, 10696), (1910, 9688), (2422, 7640), (2674, 6920), (2768, 6685), (3056, 6055), (3460, 5348), (3820, 4844)]