18980478

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{373}}^1$

素因数の和:649

約数の個数: 48

約数和(自身を含む): 45158256

約数和(自身を除く): 26177778

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 198, 257, 373, 514, 746, 771, 1119, 1542, 2238, 2313, 2827, 3357, 4103, 4626, 5654, 6714, 8206, 8481, 12309, 16962, 24618, 25443, 36927, 50886, 73854, 95861, 191722, 287583, 575166, 862749, 1054471, 1725498, 2108942, 3163413, 6326826, 9490239, 18980478]

約数ペア:

[(1, 18980478), (2, 9490239), (3, 6326826), (6, 3163413), (9, 2108942), (11, 1725498), (18, 1054471), (22, 862749), (33, 575166), (66, 287583), (99, 191722), (198, 95861), (257, 73854), (373, 50886), (514, 36927), (746, 25443), (771, 24618), (1119, 16962), (1542, 12309), (2238, 8481), (2313, 8206), (2827, 6714), (3357, 5654), (4103, 4626)]