19981986

素因数分解:

$2^1\times 3^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{4993}}^1$

素因数の和:5050

約数の個数: 32

約数和(自身を含む): 43148160

約数和(自身を除く): 23166174

約数列:

[1, 2, 3, 6, 23, 29, 46, 58, 69, 87, 138, 174, 667, 1334, 2001, 4002, 4993, 9986, 14979, 29958, 114839, 144797, 229678, 289594, 344517, 434391, 689034, 868782, 3330331, 6660662, 9990993, 19981986]

約数ペア:

[(1, 19981986), (2, 9990993), (3, 6660662), (6, 3330331), (23, 868782), (29, 689034), (46, 434391), (58, 344517), (69, 289594), (87, 229678), (138, 144797), (174, 114839), (667, 29958), (1334, 14979), (2001, 9986), (4002, 4993)]