18745930

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{67}}^1\times {\mathrm{571}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 39907296

約数和(自身を除く): 21161366

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 67, 70, 98, 134, 245, 335, 469, 490, 571, 670, 938, 1142, 2345, 2855, 3283, 3997, 4690, 5710, 6566, 7994, 16415, 19985, 27979, 32830, 38257, 39970, 55958, 76514, 139895, 191285, 267799, 279790, 382570, 535598, 1338995, 1874593, 2677990, 3749186, 9372965, 18745930]

約数ペア:

[(1, 18745930), (2, 9372965), (5, 3749186), (7, 2677990), (10, 1874593), (14, 1338995), (35, 535598), (49, 382570), (67, 279790), (70, 267799), (98, 191285), (134, 139895), (245, 76514), (335, 55958), (469, 39970), (490, 38257), (571, 32830), (670, 27979), (938, 19985), (1142, 16415), (2345, 7994), (2855, 6566), (3283, 5710), (3997, 4690)]