80420840

素因数分解:

$2^3\times 5^1\times {\mathrm{853}}^1\times {\mathrm{2357}}^1$

素因数の和:3221

約数の個数: 32

約数和(自身を含む): 181235880

約数和(自身を除く): 100815040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 853, 1706, 2357, 3412, 4265, 4714, 6824, 8530, 9428, 11785, 17060, 18856, 23570, 34120, 47140, 94280, 2010521, 4021042, 8042084, 10052605, 16084168, 20105210, 40210420, 80420840]

約数ペア:

[(1, 80420840), (2, 40210420), (4, 20105210), (5, 16084168), (8, 10052605), (10, 8042084), (20, 4021042), (40, 2010521), (853, 94280), (1706, 47140), (2357, 34120), (3412, 23570), (4265, 18856), (4714, 17060), (6824, 11785), (8530, 9428)]