728348540

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^2\times {\mathrm{9787}}^1$

素因数の和:9918

約数の個数: 36

約数和(自身を含む): 1555176168

約数和(自身を除く): 826827628

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 3721, 7442, 9787, 14884, 18605, 19574, 37210, 39148, 48935, 74420, 97870, 195740, 597007, 1194014, 2388028, 2985035, 5970070, 11940140, 36417427, 72834854, 145669708, 182087135, 364174270, 728348540]

約数ペア:

[(1, 728348540), (2, 364174270), (4, 182087135), (5, 145669708), (10, 72834854), (20, 36417427), (61, 11940140), (122, 5970070), (244, 2985035), (305, 2388028), (610, 1194014), (1220, 597007), (3721, 195740), (7442, 97870), (9787, 74420), (14884, 48935), (18605, 39148), (19574, 37210)]