21778988

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2281}}^1$

素因数の和:2334

約数の個数: 48

約数和(自身を含む): 49072128

約数和(自身を除く): 27293140

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 31, 44, 62, 77, 124, 154, 217, 308, 341, 434, 682, 868, 1364, 2281, 2387, 4562, 4774, 9124, 9548, 15967, 25091, 31934, 50182, 63868, 70711, 100364, 141422, 175637, 282844, 351274, 494977, 702548, 777821, 989954, 1555642, 1979908, 3111284, 5444747, 10889494, 21778988]

約数ペア:

[(1, 21778988), (2, 10889494), (4, 5444747), (7, 3111284), (11, 1979908), (14, 1555642), (22, 989954), (28, 777821), (31, 702548), (44, 494977), (62, 351274), (77, 282844), (124, 175637), (154, 141422), (217, 100364), (308, 70711), (341, 63868), (434, 50182), (682, 31934), (868, 25091), (1364, 15967), (2281, 9548), (2387, 9124), (4562, 4774)]