890405980

素因数分解:

$2^2\times 5^1\times {\mathrm{571}}^1\times {\mathrm{77969}}^1$

素因数の和:78549

約数の個数: 24

約数和(自身を含む): 1873151280

約数和(自身を除く): 982745300

約数列:

[1, 2, 4, 5, 10, 20, 571, 1142, 2284, 2855, 5710, 11420, 77969, 155938, 311876, 389845, 779690, 1559380, 44520299, 89040598, 178081196, 222601495, 445202990, 890405980]

約数ペア:

[(1, 890405980), (2, 445202990), (4, 222601495), (5, 178081196), (10, 89040598), (20, 44520299), (571, 1559380), (1142, 779690), (2284, 389845), (2855, 311876), (5710, 155938), (11420, 77969)]