21030310

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{167}}^1\times {\mathrm{257}}^1$

素因数の和:445

約数の個数: 48

約数和(自身を含む): 44470944

約数和(自身を除く): 23440634

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 167, 245, 257, 334, 490, 514, 835, 1169, 1285, 1670, 1799, 2338, 2570, 3598, 5845, 8183, 8995, 11690, 12593, 16366, 17990, 25186, 40915, 42919, 62965, 81830, 85838, 125930, 214595, 300433, 429190, 600866, 1502165, 2103031, 3004330, 4206062, 10515155, 21030310]

約数ペア:

[(1, 21030310), (2, 10515155), (5, 4206062), (7, 3004330), (10, 2103031), (14, 1502165), (35, 600866), (49, 429190), (70, 300433), (98, 214595), (167, 125930), (245, 85838), (257, 81830), (334, 62965), (490, 42919), (514, 40915), (835, 25186), (1169, 17990), (1285, 16366), (1670, 12593), (1799, 11690), (2338, 8995), (2570, 8183), (3598, 5845)]