81821360

素因数分解:

$2^4\times 5^1\times {\mathrm{47}}^2\times {\mathrm{463}}^1$

素因数の和:570

約数の個数: 60

約数和(自身を含む): 194788128

約数和(自身を除く): 112966768

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 47, 80, 94, 188, 235, 376, 463, 470, 752, 926, 940, 1852, 1880, 2209, 2315, 3704, 3760, 4418, 4630, 7408, 8836, 9260, 11045, 17672, 18520, 21761, 22090, 35344, 37040, 43522, 44180, 87044, 88360, 108805, 174088, 176720, 217610, 348176, 435220, 870440, 1022767, 1740880, 2045534, 4091068, 5113835, 8182136, 10227670, 16364272, 20455340, 40910680, 81821360]

約数ペア:

[(1, 81821360), (2, 40910680), (4, 20455340), (5, 16364272), (8, 10227670), (10, 8182136), (16, 5113835), (20, 4091068), (40, 2045534), (47, 1740880), (80, 1022767), (94, 870440), (188, 435220), (235, 348176), (376, 217610), (463, 176720), (470, 174088), (752, 108805), (926, 88360), (940, 87044), (1852, 44180), (1880, 43522), (2209, 37040), (2315, 35344), (3704, 22090), (3760, 21761), (4418, 18520), (4630, 17672), (7408, 11045), (8836, 9260)]