1780811960

素因数分解:

$2^3\times 5^1\times {\mathrm{571}}^1\times {\mathrm{77969}}^1$

素因数の和:78551

約数の個数: 32

約数和(自身を含む): 4013895600

約数和(自身を除く): 2233083640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 571, 1142, 2284, 2855, 4568, 5710, 11420, 22840, 77969, 155938, 311876, 389845, 623752, 779690, 1559380, 3118760, 44520299, 89040598, 178081196, 222601495, 356162392, 445202990, 890405980, 1780811960]

約数ペア:

[(1, 1780811960), (2, 890405980), (4, 445202990), (5, 356162392), (8, 222601495), (10, 178081196), (20, 89040598), (40, 44520299), (571, 3118760), (1142, 1559380), (2284, 779690), (2855, 623752), (4568, 389845), (5710, 311876), (11420, 155938), (22840, 77969)]