21920444

素因数分解:

$2^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{1229}}^1$

素因数の和:1267

約数の個数: 48

約数和(自身を含む): 48216000

約数和(自身を除く): 26295556

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 49, 52, 91, 98, 182, 196, 343, 364, 637, 686, 1229, 1274, 1372, 2458, 2548, 4459, 4916, 8603, 8918, 15977, 17206, 17836, 31954, 34412, 60221, 63908, 111839, 120442, 223678, 240884, 421547, 447356, 782873, 843094, 1565746, 1686188, 3131492, 5480111, 10960222, 21920444]

約数ペア:

[(1, 21920444), (2, 10960222), (4, 5480111), (7, 3131492), (13, 1686188), (14, 1565746), (26, 843094), (28, 782873), (49, 447356), (52, 421547), (91, 240884), (98, 223678), (182, 120442), (196, 111839), (343, 63908), (364, 60221), (637, 34412), (686, 31954), (1229, 17836), (1274, 17206), (1372, 15977), (2458, 8918), (2548, 8603), (4459, 4916)]