20078516

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^2\times {\mathrm{71}}^1$

素因数の和:216

約数の個数: 36

約数和(自身を含む): 38132640

約数和(自身を除く): 18054124

約数列:

[1, 2, 4, 19, 38, 61, 71, 76, 122, 142, 244, 284, 1159, 1349, 2318, 2698, 3721, 4331, 4636, 5396, 7442, 8662, 14884, 17324, 70699, 82289, 141398, 164578, 264191, 282796, 329156, 528382, 1056764, 5019629, 10039258, 20078516]

約数ペア:

[(1, 20078516), (2, 10039258), (4, 5019629), (19, 1056764), (38, 528382), (61, 329156), (71, 282796), (76, 264191), (122, 164578), (142, 141398), (244, 82289), (284, 70699), (1159, 17324), (1349, 14884), (2318, 8662), (2698, 7442), (3721, 5396), (4331, 4636)]