72766640

素因数分解:

$2^4\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1787}}^1$

素因数の和:2309

約数の個数: 40

約数和(自身を含む): 169609680

約数和(自身を除く): 96843040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 509, 1018, 1787, 2036, 2545, 3574, 4072, 5090, 7148, 8144, 8935, 10180, 14296, 17870, 20360, 28592, 35740, 40720, 71480, 142960, 909583, 1819166, 3638332, 4547915, 7276664, 9095830, 14553328, 18191660, 36383320, 72766640]

約数ペア:

[(1, 72766640), (2, 36383320), (4, 18191660), (5, 14553328), (8, 9095830), (10, 7276664), (16, 4547915), (20, 3638332), (40, 1819166), (80, 909583), (509, 142960), (1018, 71480), (1787, 40720), (2036, 35740), (2545, 28592), (3574, 20360), (4072, 17870), (5090, 14296), (7148, 10180), (8144, 8935)]