84587980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^2\times {\mathrm{839}}^1$

素因数の和:990

約数の個数: 36

約数和(自身を含む): 180386640

約数和(自身を除く): 95798660

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 839, 1420, 1678, 3356, 4195, 5041, 8390, 10082, 16780, 20164, 25205, 50410, 59569, 100820, 119138, 238276, 297845, 595690, 1191380, 4229399, 8458798, 16917596, 21146995, 42293990, 84587980]

約数ペア:

[(1, 84587980), (2, 42293990), (4, 21146995), (5, 16917596), (10, 8458798), (20, 4229399), (71, 1191380), (142, 595690), (284, 297845), (355, 238276), (710, 119138), (839, 100820), (1420, 59569), (1678, 50410), (3356, 25205), (4195, 20164), (5041, 16780), (8390, 10082)]