217870145

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1\times {\mathrm{233}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 281428992

約数和(自身を除く): 63558847

約数列:

[1, 5, 23, 47, 115, 173, 233, 235, 865, 1081, 1165, 3979, 5359, 5405, 8131, 10951, 19895, 26795, 40309, 40655, 54755, 187013, 201545, 251873, 927107, 935065, 1259365, 1894523, 4635535, 9472615, 43574029, 217870145]

約数ペア:

[(1, 217870145), (5, 43574029), (23, 9472615), (47, 4635535), (115, 1894523), (173, 1259365), (233, 935065), (235, 927107), (865, 251873), (1081, 201545), (1165, 187013), (3979, 54755), (5359, 40655), (5405, 40309), (8131, 26795), (10951, 19895)]