18729942

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{571}}^1$

素因数の和:665

約数の個数: 64

約数和(自身を含む): 47443968

約数和(自身を除く): 28714026

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 71, 77, 142, 154, 213, 231, 426, 462, 497, 571, 781, 994, 1142, 1491, 1562, 1713, 2343, 2982, 3426, 3997, 4686, 5467, 6281, 7994, 10934, 11991, 12562, 16401, 18843, 23982, 32802, 37686, 40541, 43967, 81082, 87934, 121623, 131901, 243246, 263802, 283787, 445951, 567574, 851361, 891902, 1337853, 1702722, 2675706, 3121657, 6243314, 9364971, 18729942]

約数ペア:

[(1, 18729942), (2, 9364971), (3, 6243314), (6, 3121657), (7, 2675706), (11, 1702722), (14, 1337853), (21, 891902), (22, 851361), (33, 567574), (42, 445951), (66, 283787), (71, 263802), (77, 243246), (142, 131901), (154, 121623), (213, 87934), (231, 81082), (426, 43967), (462, 40541), (497, 37686), (571, 32802), (781, 23982), (994, 18843), (1142, 16401), (1491, 12562), (1562, 11991), (1713, 10934), (2343, 7994), (2982, 6281), (3426, 5467), (3997, 4686)]