15889090

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1$

素因数の和:247

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 18947390

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 71, 115, 139, 142, 161, 230, 278, 322, 355, 497, 695, 710, 805, 973, 994, 1390, 1610, 1633, 1946, 2485, 3197, 3266, 4865, 4970, 6394, 8165, 9730, 9869, 11431, 15985, 16330, 19738, 22379, 22862, 31970, 44758, 49345, 57155, 69083, 98690, 111895, 114310, 138166, 223790, 226987, 345415, 453974, 690830, 1134935, 1588909, 2269870, 3177818, 7944545, 15889090]

約数ペア:

[(1, 15889090), (2, 7944545), (5, 3177818), (7, 2269870), (10, 1588909), (14, 1134935), (23, 690830), (35, 453974), (46, 345415), (70, 226987), (71, 223790), (115, 138166), (139, 114310), (142, 111895), (161, 98690), (230, 69083), (278, 57155), (322, 49345), (355, 44758), (497, 31970), (695, 22862), (710, 22379), (805, 19738), (973, 16330), (994, 15985), (1390, 11431), (1610, 9869), (1633, 9730), (1946, 8165), (2485, 6394), (3197, 4970), (3266, 4865)]