21687910

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1627}}^1$

素因数の和:1708

約数の個数: 32

約数和(自身を含む): 41260032

約数和(自身を除く): 19572122

約数列:

[1, 2, 5, 10, 31, 43, 62, 86, 155, 215, 310, 430, 1333, 1627, 2666, 3254, 6665, 8135, 13330, 16270, 50437, 69961, 100874, 139922, 252185, 349805, 504370, 699610, 2168791, 4337582, 10843955, 21687910]

約数ペア:

[(1, 21687910), (2, 10843955), (5, 4337582), (10, 2168791), (31, 699610), (43, 504370), (62, 349805), (86, 252185), (155, 139922), (215, 100874), (310, 69961), (430, 50437), (1333, 16270), (1627, 13330), (2666, 8135), (3254, 6665)]