21437776

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{727}}^1$

素因数の和:851

約数の個数: 40

約数和(自身を含む): 44233280

約数和(自身を除く): 22795504

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 97, 152, 194, 304, 388, 727, 776, 1454, 1552, 1843, 2908, 3686, 5816, 7372, 11632, 13813, 14744, 27626, 29488, 55252, 70519, 110504, 141038, 221008, 282076, 564152, 1128304, 1339861, 2679722, 5359444, 10718888, 21437776]

約数ペア:

[(1, 21437776), (2, 10718888), (4, 5359444), (8, 2679722), (16, 1339861), (19, 1128304), (38, 564152), (76, 282076), (97, 221008), (152, 141038), (194, 110504), (304, 70519), (388, 55252), (727, 29488), (776, 27626), (1454, 14744), (1552, 13813), (1843, 11632), (2908, 7372), (3686, 5816)]