816390440

素因数分解:

$2^3\times 5^1\times {\mathrm{1531}}^1\times {\mathrm{13331}}^1$

素因数の和:14873

約数の個数: 32

約数和(自身を含む): 1838216160

約数和(自身を除く): 1021825720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1531, 3062, 6124, 7655, 12248, 13331, 15310, 26662, 30620, 53324, 61240, 66655, 106648, 133310, 266620, 533240, 20409761, 40819522, 81639044, 102048805, 163278088, 204097610, 408195220, 816390440]

約数ペア:

[(1, 816390440), (2, 408195220), (4, 204097610), (5, 163278088), (8, 102048805), (10, 81639044), (20, 40819522), (40, 20409761), (1531, 533240), (3062, 266620), (6124, 133310), (7655, 106648), (12248, 66655), (13331, 61240), (15310, 53324), (26662, 30620)]