87239120

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{15359}}^1$

素因数の和:15443

約数の個数: 40

約数和(自身を含む): 205701120

約数和(自身を除く): 118462000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 15359, 30718, 61436, 76795, 122872, 153590, 245744, 307180, 614360, 1090489, 1228720, 2180978, 4361956, 5452445, 8723912, 10904890, 17447824, 21809780, 43619560, 87239120]

約数ペア:

[(1, 87239120), (2, 43619560), (4, 21809780), (5, 17447824), (8, 10904890), (10, 8723912), (16, 5452445), (20, 4361956), (40, 2180978), (71, 1228720), (80, 1090489), (142, 614360), (284, 307180), (355, 245744), (568, 153590), (710, 122872), (1136, 76795), (1420, 61436), (2840, 30718), (5680, 15359)]