65767280

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{20051}}^1$

素因数の和:20105

約数の個数: 40

約数和(自身を含む): 156646224

約数和(自身を除く): 90878944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 20051, 40102, 80204, 100255, 160408, 200510, 320816, 401020, 802040, 822091, 1604080, 1644182, 3288364, 4110455, 6576728, 8220910, 13153456, 16441820, 32883640, 65767280]

約数ペア:

[(1, 65767280), (2, 32883640), (4, 16441820), (5, 13153456), (8, 8220910), (10, 6576728), (16, 4110455), (20, 3288364), (40, 1644182), (41, 1604080), (80, 822091), (82, 802040), (164, 401020), (205, 320816), (328, 200510), (410, 160408), (656, 100255), (820, 80204), (1640, 40102), (3280, 20051)]