21970718

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{229}}^1$

素因数の和:345

約数の個数: 48

約数和(自身を含む): 42476400

約数和(自身を除く): 20505682

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 89, 98, 154, 178, 229, 458, 539, 623, 979, 1078, 1246, 1603, 1958, 2519, 3206, 4361, 5038, 6853, 8722, 11221, 13706, 17633, 20381, 22442, 35266, 40762, 47971, 95942, 123431, 142667, 224191, 246862, 285334, 448382, 998669, 1569337, 1997338, 3138674, 10985359, 21970718]

約数ペア:

[(1, 21970718), (2, 10985359), (7, 3138674), (11, 1997338), (14, 1569337), (22, 998669), (49, 448382), (77, 285334), (89, 246862), (98, 224191), (154, 142667), (178, 123431), (229, 95942), (458, 47971), (539, 40762), (623, 35266), (979, 22442), (1078, 20381), (1246, 17633), (1603, 13706), (1958, 11221), (2519, 8722), (3206, 6853), (4361, 5038)]