78719120

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{13859}}^1$

素因数の和:13943

約数の個数: 40

約数和(自身を含む): 185613120

約数和(自身を除く): 106894000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 13859, 27718, 55436, 69295, 110872, 138590, 221744, 277180, 554360, 983989, 1108720, 1967978, 3935956, 4919945, 7871912, 9839890, 15743824, 19679780, 39359560, 78719120]

約数ペア:

[(1, 78719120), (2, 39359560), (4, 19679780), (5, 15743824), (8, 9839890), (10, 7871912), (16, 4919945), (20, 3935956), (40, 1967978), (71, 1108720), (80, 983989), (142, 554360), (284, 277180), (355, 221744), (568, 138590), (710, 110872), (1136, 69295), (1420, 55436), (2840, 27718), (5680, 13859)]