31001999

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{241}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 40144896

約数和(自身を除く): 9142897

約数列:

[1, 7, 17, 23, 47, 119, 161, 241, 329, 391, 799, 1081, 1687, 2737, 4097, 5543, 5593, 7567, 11327, 18377, 28679, 38801, 79289, 94231, 128639, 192559, 260521, 659617, 1347913, 1823647, 4428857, 31001999]

約数ペア:

[(1, 31001999), (7, 4428857), (17, 1823647), (23, 1347913), (47, 659617), (119, 260521), (161, 192559), (241, 128639), (329, 94231), (391, 79289), (799, 38801), (1081, 28679), (1687, 18377), (2737, 11327), (4097, 7567), (5543, 5593)]