16920070

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{43}}^1\times {\mathrm{109}}^1$

素因数の和:197

約数の個数: 48

約数和(自身を含む): 33192720

約数和(自身を除く): 16272650

約数列:

[1, 2, 5, 10, 19, 38, 43, 86, 95, 109, 190, 215, 218, 361, 430, 545, 722, 817, 1090, 1634, 1805, 2071, 3610, 4085, 4142, 4687, 8170, 9374, 10355, 15523, 20710, 23435, 31046, 39349, 46870, 77615, 78698, 89053, 155230, 178106, 196745, 393490, 445265, 890530, 1692007, 3384014, 8460035, 16920070]

約数ペア:

[(1, 16920070), (2, 8460035), (5, 3384014), (10, 1692007), (19, 890530), (38, 445265), (43, 393490), (86, 196745), (95, 178106), (109, 155230), (190, 89053), (215, 78698), (218, 77615), (361, 46870), (430, 39349), (545, 31046), (722, 23435), (817, 20710), (1090, 15523), (1634, 10355), (1805, 9374), (2071, 8170), (3610, 4687), (4085, 4142)]