20197960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{11743}}^1$

素因数の和:11797

約数の個数: 32

約数和(自身を含む): 46506240

約数和(自身を除く): 26308280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 11743, 23486, 46972, 58715, 93944, 117430, 234860, 469720, 504949, 1009898, 2019796, 2524745, 4039592, 5049490, 10098980, 20197960]

約数ペア:

[(1, 20197960), (2, 10098980), (4, 5049490), (5, 4039592), (8, 2524745), (10, 2019796), (20, 1009898), (40, 504949), (43, 469720), (86, 234860), (172, 117430), (215, 93944), (344, 58715), (430, 46972), (860, 23486), (1720, 11743)]