20071940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{311}}^1\times {\mathrm{461}}^1$

素因数の和:788

約数の個数: 48

約数和(自身を含む): 48432384

約数和(自身を除く): 28360444

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 311, 461, 622, 922, 1244, 1555, 1844, 2177, 2305, 3110, 3227, 4354, 4610, 6220, 6454, 8708, 9220, 10885, 12908, 16135, 21770, 32270, 43540, 64540, 143371, 286742, 573484, 716855, 1003597, 1433710, 2007194, 2867420, 4014388, 5017985, 10035970, 20071940]

約数ペア:

[(1, 20071940), (2, 10035970), (4, 5017985), (5, 4014388), (7, 2867420), (10, 2007194), (14, 1433710), (20, 1003597), (28, 716855), (35, 573484), (70, 286742), (140, 143371), (311, 64540), (461, 43540), (622, 32270), (922, 21770), (1244, 16135), (1555, 12908), (1844, 10885), (2177, 9220), (2305, 8708), (3110, 6454), (3227, 6220), (4354, 4610)]