20576560

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8297}}^1$

素因数の和:8341

約数の個数: 40

約数和(自身を含む): 49389696

約数和(自身を除く): 28813136

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8297, 16594, 33188, 41485, 66376, 82970, 132752, 165940, 257207, 331880, 514414, 663760, 1028828, 1286035, 2057656, 2572070, 4115312, 5144140, 10288280, 20576560]

約数ペア:

[(1, 20576560), (2, 10288280), (4, 5144140), (5, 4115312), (8, 2572070), (10, 2057656), (16, 1286035), (20, 1028828), (31, 663760), (40, 514414), (62, 331880), (80, 257207), (124, 165940), (155, 132752), (248, 82970), (310, 66376), (496, 41485), (620, 33188), (1240, 16594), (2480, 8297)]