55780720

素因数分解:

$2^4\times 5^1\times {\mathrm{697259}}^1$

素因数の和:697272

約数の個数: 20

約数和(自身を含む): 129690360

約数和(自身を除く): 73909640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 697259, 1394518, 2789036, 3486295, 5578072, 6972590, 11156144, 13945180, 27890360, 55780720]

約数ペア:

[(1, 55780720), (2, 27890360), (4, 13945180), (5, 11156144), (8, 6972590), (10, 5578072), (16, 3486295), (20, 2789036), (40, 1394518), (80, 697259)]