81629540

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^2\times {\mathrm{1453}}^1$

素因数の和:1568

約数の個数: 36

約数和(自身を含む): 174837684

約数和(自身を除く): 93208144

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 1453, 2809, 2906, 5618, 5812, 7265, 11236, 14045, 14530, 28090, 29060, 56180, 77009, 154018, 308036, 385045, 770090, 1540180, 4081477, 8162954, 16325908, 20407385, 40814770, 81629540]

約数ペア:

[(1, 81629540), (2, 40814770), (4, 20407385), (5, 16325908), (10, 8162954), (20, 4081477), (53, 1540180), (106, 770090), (212, 385045), (265, 308036), (530, 154018), (1060, 77009), (1453, 56180), (2809, 29060), (2906, 28090), (5618, 14530), (5812, 14045), (7265, 11236)]