20978928

素因数分解:

$2^4\times 3^2\times {\mathrm{145687}}^1$

素因数の和:145701

約数の個数: 30

約数和(自身を含む): 58712264

約数和(自身を除く): 37733336

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 145687, 291374, 437061, 582748, 874122, 1165496, 1311183, 1748244, 2330992, 2622366, 3496488, 5244732, 6992976, 10489464, 20978928]

約数ペア:

[(1, 20978928), (2, 10489464), (3, 6992976), (4, 5244732), (6, 3496488), (8, 2622366), (9, 2330992), (12, 1748244), (16, 1311183), (18, 1165496), (24, 874122), (36, 582748), (48, 437061), (72, 291374), (144, 145687)]