21361077

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:271

約数の個数: 40

約数和(自身を含む): 33825792

約数和(自身を除く): 12464715

約数列:

[1, 3, 9, 27, 31, 47, 81, 93, 141, 181, 279, 423, 543, 837, 1269, 1457, 1629, 2511, 3807, 4371, 4887, 5611, 8507, 13113, 14661, 16833, 25521, 39339, 50499, 76563, 118017, 151497, 229689, 263717, 454491, 689067, 791151, 2373453, 7120359, 21361077]

約数ペア:

[(1, 21361077), (3, 7120359), (9, 2373453), (27, 791151), (31, 689067), (47, 454491), (81, 263717), (93, 229689), (141, 151497), (181, 118017), (279, 76563), (423, 50499), (543, 39339), (837, 25521), (1269, 16833), (1457, 14661), (1629, 13113), (2511, 8507), (3807, 5611), (4371, 4887)]