21807198

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1861}}^1$

素因数の和:1910

約数の個数: 64

約数和(自身を含む): 57200640

約数和(自身を除く): 35393442

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 31, 42, 54, 62, 63, 93, 126, 186, 189, 217, 279, 378, 434, 558, 651, 837, 1302, 1674, 1861, 1953, 3722, 3906, 5583, 5859, 11166, 11718, 13027, 16749, 26054, 33498, 39081, 50247, 57691, 78162, 100494, 115382, 117243, 173073, 234486, 346146, 351729, 403837, 519219, 703458, 807674, 1038438, 1211511, 1557657, 2423022, 3115314, 3634533, 7269066, 10903599, 21807198]

約数ペア:

[(1, 21807198), (2, 10903599), (3, 7269066), (6, 3634533), (7, 3115314), (9, 2423022), (14, 1557657), (18, 1211511), (21, 1038438), (27, 807674), (31, 703458), (42, 519219), (54, 403837), (62, 351729), (63, 346146), (93, 234486), (126, 173073), (186, 117243), (189, 115382), (217, 100494), (279, 78162), (378, 57691), (434, 50247), (558, 39081), (651, 33498), (837, 26054), (1302, 16749), (1674, 13027), (1861, 11718), (1953, 11166), (3722, 5859), (3906, 5583)]