20821790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{2593}}^1$

素因数の和:2684

約数の個数: 32

約数和(自身を含む): 41462496

約数和(自身を除く): 20640706

約数列:

[1, 2, 5, 10, 11, 22, 55, 73, 110, 146, 365, 730, 803, 1606, 2593, 4015, 5186, 8030, 12965, 25930, 28523, 57046, 142615, 189289, 285230, 378578, 946445, 1892890, 2082179, 4164358, 10410895, 20821790]

約数ペア:

[(1, 20821790), (2, 10410895), (5, 4164358), (10, 2082179), (11, 1892890), (22, 946445), (55, 378578), (73, 285230), (110, 189289), (146, 142615), (365, 57046), (730, 28523), (803, 25930), (1606, 12965), (2593, 8030), (4015, 5186)]