81175040

素因数分解:

$2^9\times 5^1\times {\mathrm{37}}^1\times {\mathrm{857}}^1$

素因数の和:917

約数の個数: 80

約数和(自身を含む): 200123352

約数和(自身を除く): 118948312

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 370, 512, 592, 640, 740, 857, 1184, 1280, 1480, 1714, 2368, 2560, 2960, 3428, 4285, 4736, 5920, 6856, 8570, 9472, 11840, 13712, 17140, 18944, 23680, 27424, 31709, 34280, 47360, 54848, 63418, 68560, 94720, 109696, 126836, 137120, 158545, 219392, 253672, 274240, 317090, 438784, 507344, 548480, 634180, 1014688, 1096960, 1268360, 2029376, 2193920, 2536720, 4058752, 5073440, 8117504, 10146880, 16235008, 20293760, 40587520, 81175040]

約数ペア:

[(1, 81175040), (2, 40587520), (4, 20293760), (5, 16235008), (8, 10146880), (10, 8117504), (16, 5073440), (20, 4058752), (32, 2536720), (37, 2193920), (40, 2029376), (64, 1268360), (74, 1096960), (80, 1014688), (128, 634180), (148, 548480), (160, 507344), (185, 438784), (256, 317090), (296, 274240), (320, 253672), (370, 219392), (512, 158545), (592, 137120), (640, 126836), (740, 109696), (857, 94720), (1184, 68560), (1280, 63418), (1480, 54848), (1714, 47360), (2368, 34280), (2560, 31709), (2960, 27424), (3428, 23680), (4285, 18944), (4736, 17140), (5920, 13712), (6856, 11840), (8570, 9472)]