64076720

素因数分解:

$2^4\times 5^1\times {\mathrm{800959}}^1$

素因数の和:800972

約数の個数: 20

約数和(自身を含む): 148978560

約数和(自身を除く): 84901840

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 800959, 1601918, 3203836, 4004795, 6407672, 8009590, 12815344, 16019180, 32038360, 64076720]

約数ペア:

[(1, 64076720), (2, 32038360), (4, 16019180), (5, 12815344), (8, 8009590), (10, 6407672), (16, 4004795), (20, 3203836), (40, 1601918), (80, 800959)]