20999342

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{311}}^1$

素因数の和:393

約数の個数: 48

約数和(自身を含む): 40334112

約数和(自身を除く): 19334770

約数列:

[1, 2, 7, 13, 14, 26, 49, 53, 91, 98, 106, 182, 311, 371, 622, 637, 689, 742, 1274, 1378, 2177, 2597, 4043, 4354, 4823, 5194, 8086, 9646, 15239, 16483, 28301, 30478, 32966, 33761, 56602, 67522, 115381, 198107, 214279, 230762, 396214, 428558, 807667, 1499953, 1615334, 2999906, 10499671, 20999342]

約数ペア:

[(1, 20999342), (2, 10499671), (7, 2999906), (13, 1615334), (14, 1499953), (26, 807667), (49, 428558), (53, 396214), (91, 230762), (98, 214279), (106, 198107), (182, 115381), (311, 67522), (371, 56602), (622, 33761), (637, 32966), (689, 30478), (742, 28301), (1274, 16483), (1378, 15239), (2177, 9646), (2597, 8086), (4043, 5194), (4354, 4823)]