80404880

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{4507}}^1$

素因数の和:4743

約数の個数: 40

約数和(自身を含む): 187821312

約数和(自身を除く): 107416432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1784, 2230, 3568, 4460, 4507, 8920, 9014, 17840, 18028, 22535, 36056, 45070, 72112, 90140, 180280, 360560, 1005061, 2010122, 4020244, 5025305, 8040488, 10050610, 16080976, 20101220, 40202440, 80404880]

約数ペア:

[(1, 80404880), (2, 40202440), (4, 20101220), (5, 16080976), (8, 10050610), (10, 8040488), (16, 5025305), (20, 4020244), (40, 2010122), (80, 1005061), (223, 360560), (446, 180280), (892, 90140), (1115, 72112), (1784, 45070), (2230, 36056), (3568, 22535), (4460, 18028), (4507, 17840), (8920, 9014)]