21621838

素因数分解:

$2^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1$

素因数の和:209

約数の個数: 48

約数和(自身を含む): 39767760

約数和(自身を除く): 18145922

約数列:

[1, 2, 7, 14, 37, 49, 67, 74, 89, 98, 134, 178, 259, 469, 518, 623, 938, 1246, 1813, 2479, 3283, 3293, 3626, 4361, 4958, 5963, 6566, 6586, 8722, 11926, 17353, 23051, 34706, 41741, 46102, 83482, 121471, 161357, 220631, 242942, 292187, 322714, 441262, 584374, 1544417, 3088834, 10810919, 21621838]

約数ペア:

[(1, 21621838), (2, 10810919), (7, 3088834), (14, 1544417), (37, 584374), (49, 441262), (67, 322714), (74, 292187), (89, 242942), (98, 220631), (134, 161357), (178, 121471), (259, 83482), (469, 46102), (518, 41741), (623, 34706), (938, 23051), (1246, 17353), (1813, 11926), (2479, 8722), (3283, 6586), (3293, 6566), (3626, 5963), (4361, 4958)]