19967864

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 25996936

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 37, 46, 56, 74, 92, 148, 161, 184, 259, 296, 322, 419, 518, 644, 838, 851, 1036, 1288, 1676, 1702, 2072, 2933, 3352, 3404, 5866, 5957, 6808, 9637, 11732, 11914, 15503, 19274, 23464, 23828, 31006, 38548, 47656, 62012, 67459, 77096, 108521, 124024, 134918, 217042, 269836, 356569, 434084, 539672, 713138, 868168, 1426276, 2495983, 2852552, 4991966, 9983932, 19967864]

約数ペア:

[(1, 19967864), (2, 9983932), (4, 4991966), (7, 2852552), (8, 2495983), (14, 1426276), (23, 868168), (28, 713138), (37, 539672), (46, 434084), (56, 356569), (74, 269836), (92, 217042), (148, 134918), (161, 124024), (184, 108521), (259, 77096), (296, 67459), (322, 62012), (419, 47656), (518, 38548), (644, 31006), (838, 23828), (851, 23464), (1036, 19274), (1288, 15503), (1676, 11914), (1702, 11732), (2072, 9637), (2933, 6808), (3352, 5957), (3404, 5866)]