20956648

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{691}}^1$

素因数の和:937

約数の個数: 32

約数和(自身を含む): 41852160

約数和(自身を除く): 20895512

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 223, 446, 691, 892, 1382, 1784, 2764, 3791, 5528, 7582, 11747, 15164, 23494, 30328, 46988, 93976, 154093, 308186, 616372, 1232744, 2619581, 5239162, 10478324, 20956648]

約数ペア:

[(1, 20956648), (2, 10478324), (4, 5239162), (8, 2619581), (17, 1232744), (34, 616372), (68, 308186), (136, 154093), (223, 93976), (446, 46988), (691, 30328), (892, 23494), (1382, 15164), (1784, 11747), (2764, 7582), (3791, 5528)]