19558064

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{691}}^1$

素因数の和:789

約数の個数: 40

約数和(自身を含む): 39900720

約数和(自身を除く): 20342656

約数列:

[1, 2, 4, 8, 16, 29, 58, 61, 116, 122, 232, 244, 464, 488, 691, 976, 1382, 1769, 2764, 3538, 5528, 7076, 11056, 14152, 20039, 28304, 40078, 42151, 80156, 84302, 160312, 168604, 320624, 337208, 674416, 1222379, 2444758, 4889516, 9779032, 19558064]

約数ペア:

[(1, 19558064), (2, 9779032), (4, 4889516), (8, 2444758), (16, 1222379), (29, 674416), (58, 337208), (61, 320624), (116, 168604), (122, 160312), (232, 84302), (244, 80156), (464, 42151), (488, 40078), (691, 28304), (976, 20039), (1382, 14152), (1769, 11056), (2764, 7076), (3538, 5528)]