21000470454

素因数分解:

$2^1\times 3^3\times {\mathrm{71}}^1\times {\mathrm{1553}}^1\times {\mathrm{3527}}^1$

素因数の和:5162

約数の個数: 64

約数和(自身を含む): 47368903680

約数和(自身を除く): 26368433226

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 142, 213, 426, 639, 1278, 1553, 1917, 3106, 3527, 3834, 4659, 7054, 9318, 10581, 13977, 21162, 27954, 31743, 41931, 63486, 83862, 95229, 110263, 190458, 220526, 250417, 330789, 500834, 661578, 751251, 992367, 1502502, 1984734, 2253753, 2977101, 4507506, 5477431, 5954202, 6761259, 10954862, 13522518, 16432293, 32864586, 49296879, 98593758, 147890637, 295781274, 388897601, 777795202, 1166692803, 2333385606, 3500078409, 7000156818, 10500235227, 21000470454]

約数ペア:

[(1, 21000470454), (2, 10500235227), (3, 7000156818), (6, 3500078409), (9, 2333385606), (18, 1166692803), (27, 777795202), (54, 388897601), (71, 295781274), (142, 147890637), (213, 98593758), (426, 49296879), (639, 32864586), (1278, 16432293), (1553, 13522518), (1917, 10954862), (3106, 6761259), (3527, 5954202), (3834, 5477431), (4659, 4507506), (7054, 2977101), (9318, 2253753), (10581, 1984734), (13977, 1502502), (21162, 992367), (27954, 751251), (31743, 661578), (41931, 500834), (63486, 330789), (83862, 250417), (95229, 220526), (110263, 190458)]