19811418

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:491

約数の個数: 64

約数和(自身を含む): 46669824

約数和(自身を除く): 26858406

約数列:

[1, 2, 3, 6, 11, 22, 23, 31, 33, 46, 62, 66, 69, 93, 138, 186, 253, 341, 421, 506, 682, 713, 759, 842, 1023, 1263, 1426, 1518, 2046, 2139, 2526, 4278, 4631, 7843, 9262, 9683, 13051, 13893, 15686, 19366, 23529, 26102, 27786, 29049, 39153, 47058, 58098, 78306, 106513, 143561, 213026, 287122, 300173, 319539, 430683, 600346, 639078, 861366, 900519, 1801038, 3301903, 6603806, 9905709, 19811418]

約数ペア:

[(1, 19811418), (2, 9905709), (3, 6603806), (6, 3301903), (11, 1801038), (22, 900519), (23, 861366), (31, 639078), (33, 600346), (46, 430683), (62, 319539), (66, 300173), (69, 287122), (93, 213026), (138, 143561), (186, 106513), (253, 78306), (341, 58098), (421, 47058), (506, 39153), (682, 29049), (713, 27786), (759, 26102), (842, 23529), (1023, 19366), (1263, 15686), (1426, 13893), (1518, 13051), (2046, 9683), (2139, 9262), (2526, 7843), (4278, 4631)]