81093560

素因数分解:

$2^3\times 5^1\times {\mathrm{491}}^1\times {\mathrm{4129}}^1$

素因数の和:4631

約数の個数: 32

約数和(自身を含む): 182876400

約数和(自身を除く): 101782840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 491, 982, 1964, 2455, 3928, 4129, 4910, 8258, 9820, 16516, 19640, 20645, 33032, 41290, 82580, 165160, 2027339, 4054678, 8109356, 10136695, 16218712, 20273390, 40546780, 81093560]

約数ペア:

[(1, 81093560), (2, 40546780), (4, 20273390), (5, 16218712), (8, 10136695), (10, 8109356), (20, 4054678), (40, 2027339), (491, 165160), (982, 82580), (1964, 41290), (2455, 33032), (3928, 20645), (4129, 19640), (4910, 16516), (8258, 9820)]