21191078

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1$

素因数の和:304

約数の個数: 32

約数和(自身を含む): 34992000

約数和(自身を除く): 13800922

約数列:

[1, 2, 17, 34, 47, 89, 94, 149, 178, 298, 799, 1513, 1598, 2533, 3026, 4183, 5066, 7003, 8366, 13261, 14006, 26522, 71111, 119051, 142222, 225437, 238102, 450874, 623267, 1246534, 10595539, 21191078]

約数ペア:

[(1, 21191078), (2, 10595539), (17, 1246534), (34, 623267), (47, 450874), (89, 238102), (94, 225437), (149, 142222), (178, 119051), (298, 71111), (799, 26522), (1513, 14006), (1598, 13261), (2533, 8366), (3026, 7003), (4183, 5066)]