81691760

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{15241}}^1$

素因数の和:15321

約数の個数: 40

約数和(自身を含む): 192780816

約数和(自身を除く): 111089056

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 5360, 15241, 30482, 60964, 76205, 121928, 152410, 243856, 304820, 609640, 1021147, 1219280, 2042294, 4084588, 5105735, 8169176, 10211470, 16338352, 20422940, 40845880, 81691760]

約数ペア:

[(1, 81691760), (2, 40845880), (4, 20422940), (5, 16338352), (8, 10211470), (10, 8169176), (16, 5105735), (20, 4084588), (40, 2042294), (67, 1219280), (80, 1021147), (134, 609640), (268, 304820), (335, 243856), (536, 152410), (670, 121928), (1072, 76205), (1340, 60964), (2680, 30482), (5360, 15241)]