201123980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{1097}}^1$

素因数の和:1298

約数の個数: 48

約数和(自身を含む): 431645760

約数和(自身を除く): 230521780

約数列:

[1, 2, 4, 5, 10, 20, 89, 103, 178, 206, 356, 412, 445, 515, 890, 1030, 1097, 1780, 2060, 2194, 4388, 5485, 9167, 10970, 18334, 21940, 36668, 45835, 91670, 97633, 112991, 183340, 195266, 225982, 390532, 451964, 488165, 564955, 976330, 1129910, 1952660, 2259820, 10056199, 20112398, 40224796, 50280995, 100561990, 201123980]

約数ペア:

[(1, 201123980), (2, 100561990), (4, 50280995), (5, 40224796), (10, 20112398), (20, 10056199), (89, 2259820), (103, 1952660), (178, 1129910), (206, 976330), (356, 564955), (412, 488165), (445, 451964), (515, 390532), (890, 225982), (1030, 195266), (1097, 183340), (1780, 112991), (2060, 97633), (2194, 91670), (4388, 45835), (5485, 36668), (9167, 21940), (10970, 18334)]