64639720

素因数分解:

$2^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{9341}}^1$

素因数の和:9525

約数の個数: 32

約数和(自身を含む): 146295720

約数和(自身を除く): 81656000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 173, 346, 692, 865, 1384, 1730, 3460, 6920, 9341, 18682, 37364, 46705, 74728, 93410, 186820, 373640, 1615993, 3231986, 6463972, 8079965, 12927944, 16159930, 32319860, 64639720]

約数ペア:

[(1, 64639720), (2, 32319860), (4, 16159930), (5, 12927944), (8, 8079965), (10, 6463972), (20, 3231986), (40, 1615993), (173, 373640), (346, 186820), (692, 93410), (865, 74728), (1384, 46705), (1730, 37364), (3460, 18682), (6920, 9341)]