21405314

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:151

約数の個数: 48

約数和(自身を含む): 39847104

約数和(自身を除く): 18441790

約数列:

[1, 2, 7, 14, 31, 37, 43, 62, 74, 86, 217, 259, 301, 434, 518, 602, 961, 1147, 1333, 1591, 1922, 2294, 2666, 3182, 6727, 8029, 9331, 11137, 13454, 16058, 18662, 22274, 35557, 41323, 49321, 71114, 82646, 98642, 248899, 289261, 345247, 497798, 578522, 690494, 1528951, 3057902, 10702657, 21405314]

約数ペア:

[(1, 21405314), (2, 10702657), (7, 3057902), (14, 1528951), (31, 690494), (37, 578522), (43, 497798), (62, 345247), (74, 289261), (86, 248899), (217, 98642), (259, 82646), (301, 71114), (434, 49321), (518, 41323), (602, 35557), (961, 22274), (1147, 18662), (1333, 16058), (1591, 13454), (1922, 11137), (2294, 9331), (2666, 8029), (3182, 6727)]