20975658

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:467

約数の個数: 64

約数和(自身を含む): 49420800

約数和(自身を除く): 28445142

約数列:

[1, 2, 3, 6, 11, 19, 22, 33, 38, 43, 57, 66, 86, 114, 129, 209, 258, 389, 418, 473, 627, 778, 817, 946, 1167, 1254, 1419, 1634, 2334, 2451, 2838, 4279, 4902, 7391, 8558, 8987, 12837, 14782, 16727, 17974, 22173, 25674, 26961, 33454, 44346, 50181, 53922, 81301, 100362, 162602, 183997, 243903, 317813, 367994, 487806, 551991, 635626, 953439, 1103982, 1906878, 3495943, 6991886, 10487829, 20975658]

約数ペア:

[(1, 20975658), (2, 10487829), (3, 6991886), (6, 3495943), (11, 1906878), (19, 1103982), (22, 953439), (33, 635626), (38, 551991), (43, 487806), (57, 367994), (66, 317813), (86, 243903), (114, 183997), (129, 162602), (209, 100362), (258, 81301), (389, 53922), (418, 50181), (473, 44346), (627, 33454), (778, 26961), (817, 25674), (946, 22173), (1167, 17974), (1254, 16727), (1419, 14782), (1634, 12837), (2334, 8987), (2451, 8558), (2838, 7391), (4279, 4902)]