2008989880

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{564323}}^1$

素因数の和:564423

約数の個数: 32

約数和(自身を含む): 4571024400

約数和(自身を除く): 2562034520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 564323, 1128646, 2257292, 2821615, 4514584, 5643230, 11286460, 22572920, 50224747, 100449494, 200898988, 251123735, 401797976, 502247470, 1004494940, 2008989880]

約数ペア:

[(1, 2008989880), (2, 1004494940), (4, 502247470), (5, 401797976), (8, 251123735), (10, 200898988), (20, 100449494), (40, 50224747), (89, 22572920), (178, 11286460), (356, 5643230), (445, 4514584), (712, 2821615), (890, 2257292), (1780, 1128646), (3560, 564323)]