8673940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 20139840

約数和(自身を除く): 11465900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 443, 445, 886, 890, 979, 1772, 1780, 1958, 2215, 3916, 4430, 4873, 4895, 8860, 9746, 9790, 19492, 19580, 24365, 39427, 48730, 78854, 97460, 157708, 197135, 394270, 433697, 788540, 867394, 1734788, 2168485, 4336970, 8673940]

約数ペア:

[(1, 8673940), (2, 4336970), (4, 2168485), (5, 1734788), (10, 867394), (11, 788540), (20, 433697), (22, 394270), (44, 197135), (55, 157708), (89, 97460), (110, 78854), (178, 48730), (220, 39427), (356, 24365), (443, 19580), (445, 19492), (886, 9790), (890, 9746), (979, 8860), (1772, 4895), (1780, 4873), (1958, 4430), (2215, 3916)]