78478880

素因数分解:

$2^5\times 5^1\times {\mathrm{490493}}^1$

素因数の和:490508

約数の個数: 24

約数和(自身を含む): 185406732

約数和(自身を除く): 106927852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 490493, 980986, 1961972, 2452465, 3923944, 4904930, 7847888, 9809860, 15695776, 19619720, 39239440, 78478880]

約数ペア:

[(1, 78478880), (2, 39239440), (4, 19619720), (5, 15695776), (8, 9809860), (10, 7847888), (16, 4904930), (20, 3923944), (32, 2452465), (40, 1961972), (80, 980986), (160, 490493)]