64843120

素因数分解:

$2^4\times 5^1\times {\mathrm{810539}}^1$

素因数の和:810552

約数の個数: 20

約数和(自身を含む): 150760440

約数和(自身を除く): 85917320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 810539, 1621078, 3242156, 4052695, 6484312, 8105390, 12968624, 16210780, 32421560, 64843120]

約数ペア:

[(1, 64843120), (2, 32421560), (4, 16210780), (5, 12968624), (8, 8105390), (10, 6484312), (16, 4052695), (20, 3242156), (40, 1621078), (80, 810539)]