19859968

素因数分解:

$2^9\times {\mathrm{79}}^1\times {\mathrm{491}}^1$

素因数の和:588

約数の個数: 40

約数和(自身を含む): 40265280

約数和(自身を除く): 20405312

約数列:

[1, 2, 4, 8, 16, 32, 64, 79, 128, 158, 256, 316, 491, 512, 632, 982, 1264, 1964, 2528, 3928, 5056, 7856, 10112, 15712, 20224, 31424, 38789, 40448, 62848, 77578, 125696, 155156, 251392, 310312, 620624, 1241248, 2482496, 4964992, 9929984, 19859968]

約数ペア:

[(1, 19859968), (2, 9929984), (4, 4964992), (8, 2482496), (16, 1241248), (32, 620624), (64, 310312), (79, 251392), (128, 155156), (158, 125696), (256, 77578), (316, 62848), (491, 40448), (512, 38789), (632, 31424), (982, 20224), (1264, 15712), (1964, 10112), (2528, 7856), (3928, 5056)]