19697440

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1$

素因数の和:474

約数の個数: 96

約数和(自身を含む): 54552960

約数和(自身を除く): 34855520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 43, 56, 70, 80, 86, 112, 140, 160, 172, 215, 224, 280, 301, 344, 409, 430, 560, 602, 688, 818, 860, 1120, 1204, 1376, 1505, 1636, 1720, 2045, 2408, 2863, 3010, 3272, 3440, 4090, 4816, 5726, 6020, 6544, 6880, 8180, 9632, 11452, 12040, 13088, 14315, 16360, 17587, 22904, 24080, 28630, 32720, 35174, 45808, 48160, 57260, 65440, 70348, 87935, 91616, 114520, 123109, 140696, 175870, 229040, 246218, 281392, 351740, 458080, 492436, 562784, 615545, 703480, 984872, 1231090, 1406960, 1969744, 2462180, 2813920, 3939488, 4924360, 9848720, 19697440]

約数ペア:

[(1, 19697440), (2, 9848720), (4, 4924360), (5, 3939488), (7, 2813920), (8, 2462180), (10, 1969744), (14, 1406960), (16, 1231090), (20, 984872), (28, 703480), (32, 615545), (35, 562784), (40, 492436), (43, 458080), (56, 351740), (70, 281392), (80, 246218), (86, 229040), (112, 175870), (140, 140696), (160, 123109), (172, 114520), (215, 91616), (224, 87935), (280, 70348), (301, 65440), (344, 57260), (409, 48160), (430, 45808), (560, 35174), (602, 32720), (688, 28630), (818, 24080), (860, 22904), (1120, 17587), (1204, 16360), (1376, 14315), (1505, 13088), (1636, 12040), (1720, 11452), (2045, 9632), (2408, 8180), (2863, 6880), (3010, 6544), (3272, 6020), (3440, 5726), (4090, 4816)]