394335280

素因数分解:

$2^4\times 5^1\times {\mathrm{4929191}}^1$

素因数の和:4929204

約数の個数: 20

約数和(自身を含む): 916829712

約数和(自身を除く): 522494432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4929191, 9858382, 19716764, 24645955, 39433528, 49291910, 78867056, 98583820, 197167640, 394335280]

約数ペア:

[(1, 394335280), (2, 197167640), (4, 98583820), (5, 78867056), (8, 49291910), (10, 39433528), (16, 24645955), (20, 19716764), (40, 9858382), (80, 4929191)]