20439918

素因数分解:

$2^1\times 3^3\times {\mathrm{89}}^1\times {\mathrm{4253}}^1$

素因数の和:4353

約数の個数: 32

約数和(自身を含む): 45943200

約数和(自身を除く): 25503282

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 89, 178, 267, 534, 801, 1602, 2403, 4253, 4806, 8506, 12759, 25518, 38277, 76554, 114831, 229662, 378517, 757034, 1135551, 2271102, 3406653, 6813306, 10219959, 20439918]

約数ペア:

[(1, 20439918), (2, 10219959), (3, 6813306), (6, 3406653), (9, 2271102), (18, 1135551), (27, 757034), (54, 378517), (89, 229662), (178, 114831), (267, 76554), (534, 38277), (801, 25518), (1602, 12759), (2403, 8506), (4253, 4806)]