19932381

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{503}}^1$

素因数の和:570

約数の個数: 48

約数和(自身を含む): 35852544

約数和(自身を除く): 15920163

約数列:

[1, 3, 7, 9, 17, 21, 37, 51, 63, 111, 119, 153, 259, 333, 357, 503, 629, 777, 1071, 1509, 1887, 2331, 3521, 4403, 4527, 5661, 8551, 10563, 13209, 18611, 25653, 31689, 39627, 55833, 59857, 76959, 130277, 167499, 179571, 316387, 390831, 538713, 949161, 1172493, 2214709, 2847483, 6644127, 19932381]

約数ペア:

[(1, 19932381), (3, 6644127), (7, 2847483), (9, 2214709), (17, 1172493), (21, 949161), (37, 538713), (51, 390831), (63, 316387), (111, 179571), (119, 167499), (153, 130277), (259, 76959), (333, 59857), (357, 55833), (503, 39627), (629, 31689), (777, 25653), (1071, 18611), (1509, 13209), (1887, 10563), (2331, 8551), (3521, 5661), (4403, 4527)]