20438138

素因数分解:

$2^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{349}}^1$

素因数の和:494

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15849862

約数列:

[1, 2, 7, 14, 47, 89, 94, 178, 329, 349, 623, 658, 698, 1246, 2443, 4183, 4886, 8366, 16403, 29281, 31061, 32806, 58562, 62122, 114821, 217427, 229642, 434854, 1459867, 2919734, 10219069, 20438138]

約数ペア:

[(1, 20438138), (2, 10219069), (7, 2919734), (14, 1459867), (47, 434854), (89, 229642), (94, 217427), (178, 114821), (329, 62122), (349, 58562), (623, 32806), (658, 31061), (698, 29281), (1246, 16403), (2443, 8366), (4183, 4886)]