205509991

素因数分解:

${\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:351

約数の個数: 32

約数和(自身を含む): 237385728

約数和(自身を除く): 31875737

約数列:

[1, 17, 23, 47, 53, 211, 391, 799, 901, 1081, 1219, 2491, 3587, 4853, 9917, 11183, 18377, 20723, 42347, 57293, 82501, 168589, 190111, 228091, 257209, 525601, 973981, 3877547, 4372553, 8935217, 12088823, 205509991]

約数ペア:

[(1, 205509991), (17, 12088823), (23, 8935217), (47, 4372553), (53, 3877547), (211, 973981), (391, 525601), (799, 257209), (901, 228091), (1081, 190111), (1219, 168589), (2491, 82501), (3587, 57293), (4853, 42347), (9917, 20723), (11183, 18377)]