81812560

素因数分解:

$2^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{14009}}^1$

素因数の和:14095

約数の個数: 40

約数和(自身を含む): 192833640

約数和(自身を除く): 111021080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 73, 80, 146, 292, 365, 584, 730, 1168, 1460, 2920, 5840, 14009, 28018, 56036, 70045, 112072, 140090, 224144, 280180, 560360, 1022657, 1120720, 2045314, 4090628, 5113285, 8181256, 10226570, 16362512, 20453140, 40906280, 81812560]

約数ペア:

[(1, 81812560), (2, 40906280), (4, 20453140), (5, 16362512), (8, 10226570), (10, 8181256), (16, 5113285), (20, 4090628), (40, 2045314), (73, 1120720), (80, 1022657), (146, 560360), (292, 280180), (365, 224144), (584, 140090), (730, 112072), (1168, 70045), (1460, 56036), (2920, 28018), (5840, 14009)]