81728560

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{27611}}^1$

素因数の和:27661

約数の個数: 40

約数和(自身を含む): 195161616

約数和(自身を除く): 113433056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 27611, 55222, 110444, 138055, 220888, 276110, 441776, 552220, 1021607, 1104440, 2043214, 2208880, 4086428, 5108035, 8172856, 10216070, 16345712, 20432140, 40864280, 81728560]

約数ペア:

[(1, 81728560), (2, 40864280), (4, 20432140), (5, 16345712), (8, 10216070), (10, 8172856), (16, 5108035), (20, 4086428), (37, 2208880), (40, 2043214), (74, 1104440), (80, 1021607), (148, 552220), (185, 441776), (296, 276110), (370, 220888), (592, 138055), (740, 110444), (1480, 55222), (2960, 27611)]