12720850

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{283}}^1$

素因数の和:355

約数の個数: 48

約数和(自身を含む): 25355520

約数和(自身を除く): 12634670

約数列:

[1, 2, 5, 10, 25, 29, 31, 50, 58, 62, 145, 155, 283, 290, 310, 566, 725, 775, 899, 1415, 1450, 1550, 1798, 2830, 4495, 7075, 8207, 8773, 8990, 14150, 16414, 17546, 22475, 41035, 43865, 44950, 82070, 87730, 205175, 219325, 254417, 410350, 438650, 508834, 1272085, 2544170, 6360425, 12720850]

約数ペア:

[(1, 12720850), (2, 6360425), (5, 2544170), (10, 1272085), (25, 508834), (29, 438650), (31, 410350), (50, 254417), (58, 219325), (62, 205175), (145, 87730), (155, 82070), (283, 44950), (290, 43865), (310, 41035), (566, 22475), (725, 17546), (775, 16414), (899, 14150), (1415, 8990), (1450, 8773), (1550, 8207), (1798, 7075), (2830, 4495)]