18751784

素因数分解:

$2^3\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{151}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 38221920

約数和(自身を除く): 19470136

約数列:

[1, 2, 4, 8, 19, 38, 43, 76, 86, 151, 152, 172, 302, 344, 361, 604, 722, 817, 1208, 1444, 1634, 2869, 2888, 3268, 5738, 6493, 6536, 11476, 12986, 15523, 22952, 25972, 31046, 51944, 54511, 62092, 109022, 123367, 124184, 218044, 246734, 436088, 493468, 986936, 2343973, 4687946, 9375892, 18751784]

約数ペア:

[(1, 18751784), (2, 9375892), (4, 4687946), (8, 2343973), (19, 986936), (38, 493468), (43, 436088), (76, 246734), (86, 218044), (151, 124184), (152, 123367), (172, 109022), (302, 62092), (344, 54511), (361, 51944), (604, 31046), (722, 25972), (817, 22952), (1208, 15523), (1444, 12986), (1634, 11476), (2869, 6536), (2888, 6493), (3268, 5738)]