21750316

素因数分解:

$2^2\times 7^3\times {\mathrm{83}}^1\times {\mathrm{191}}^1$

素因数の和:299

約数の個数: 48

約数和(自身を含む): 45158400

約数和(自身を除く): 23408084

約数列:

[1, 2, 4, 7, 14, 28, 49, 83, 98, 166, 191, 196, 332, 343, 382, 581, 686, 764, 1162, 1337, 1372, 2324, 2674, 4067, 5348, 8134, 9359, 15853, 16268, 18718, 28469, 31706, 37436, 56938, 63412, 65513, 110971, 113876, 131026, 221942, 262052, 443884, 776797, 1553594, 3107188, 5437579, 10875158, 21750316]

約数ペア:

[(1, 21750316), (2, 10875158), (4, 5437579), (7, 3107188), (14, 1553594), (28, 776797), (49, 443884), (83, 262052), (98, 221942), (166, 131026), (191, 113876), (196, 110971), (332, 65513), (343, 63412), (382, 56938), (581, 37436), (686, 31706), (764, 28469), (1162, 18718), (1337, 16268), (1372, 15853), (2324, 9359), (2674, 8134), (4067, 5348)]