21986776

素因数分解:

$2^3\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1993}}^1$

素因数の和:2203

約数の個数: 32

約数和(自身を含む): 47377440

約数和(自身を除く): 25390664

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 197, 394, 788, 1379, 1576, 1993, 2758, 3986, 5516, 7972, 11032, 13951, 15944, 27902, 55804, 111608, 392621, 785242, 1570484, 2748347, 3140968, 5496694, 10993388, 21986776]

約数ペア:

[(1, 21986776), (2, 10993388), (4, 5496694), (7, 3140968), (8, 2748347), (14, 1570484), (28, 785242), (56, 392621), (197, 111608), (394, 55804), (788, 27902), (1379, 15944), (1576, 13951), (1993, 11032), (2758, 7972), (3986, 5516)]