21370503

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1303}}^1$

素因数の和:1395

約数の個数: 32

約数和(自身を含む): 36052992

約数和(自身を除く): 14682489

約数列:

[1, 3, 7, 11, 21, 33, 71, 77, 213, 231, 497, 781, 1303, 1491, 2343, 3909, 5467, 9121, 14333, 16401, 27363, 42999, 92513, 100331, 277539, 300993, 647591, 1017643, 1942773, 3052929, 7123501, 21370503]

約数ペア:

[(1, 21370503), (3, 7123501), (7, 3052929), (11, 1942773), (21, 1017643), (33, 647591), (71, 300993), (77, 277539), (213, 100331), (231, 92513), (497, 42999), (781, 27363), (1303, 16401), (1491, 14333), (2343, 9121), (3909, 5467)]