201721949

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{491}}^1$

素因数の和:558

約数の個数: 32

約数和(自身を含む): 252927360

約数和(自身を除く): 51205411

約数列:

[1, 11, 13, 17, 143, 169, 187, 221, 491, 1859, 2197, 2431, 2873, 5401, 6383, 8347, 24167, 31603, 37349, 70213, 82979, 91817, 108511, 410839, 912769, 1078727, 1193621, 1410643, 11865997, 15517073, 18338359, 201721949]

約数ペア:

[(1, 201721949), (11, 18338359), (13, 15517073), (17, 11865997), (143, 1410643), (169, 1193621), (187, 1078727), (221, 912769), (491, 410839), (1859, 108511), (2197, 91817), (2431, 82979), (2873, 70213), (5401, 37349), (6383, 31603), (8347, 24167)]