21810210

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{433}}^1$

素因数の和:539

約数の個数: 64

約数和(自身を含む): 55496448

約数和(自身を除く): 33686238

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 73, 115, 138, 146, 219, 230, 345, 365, 433, 438, 690, 730, 866, 1095, 1299, 1679, 2165, 2190, 2598, 3358, 4330, 5037, 6495, 8395, 9959, 10074, 12990, 16790, 19918, 25185, 29877, 31609, 49795, 50370, 59754, 63218, 94827, 99590, 149385, 158045, 189654, 298770, 316090, 474135, 727007, 948270, 1454014, 2181021, 3635035, 4362042, 7270070, 10905105, 21810210]

約数ペア:

[(1, 21810210), (2, 10905105), (3, 7270070), (5, 4362042), (6, 3635035), (10, 2181021), (15, 1454014), (23, 948270), (30, 727007), (46, 474135), (69, 316090), (73, 298770), (115, 189654), (138, 158045), (146, 149385), (219, 99590), (230, 94827), (345, 63218), (365, 59754), (433, 50370), (438, 49795), (690, 31609), (730, 29877), (866, 25185), (1095, 19918), (1299, 16790), (1679, 12990), (2165, 10074), (2190, 9959), (2598, 8395), (3358, 6495), (4330, 5037)]