28656369

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1$

素因数の和:187

約数の個数: 64

約数和(自身を含む): 51527680

約数和(自身を除く): 22871311

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 67, 73, 93, 189, 201, 217, 219, 279, 469, 511, 603, 651, 657, 837, 1407, 1533, 1809, 1953, 1971, 2077, 2263, 4221, 4599, 4891, 5859, 6231, 6789, 12663, 13797, 14539, 14673, 15841, 18693, 20367, 34237, 43617, 44019, 47523, 56079, 61101, 102711, 130851, 132057, 142569, 151621, 308133, 392553, 427707, 454863, 924399, 1061347, 1364589, 3184041, 4093767, 9552123, 28656369]

約数ペア:

[(1, 28656369), (3, 9552123), (7, 4093767), (9, 3184041), (21, 1364589), (27, 1061347), (31, 924399), (63, 454863), (67, 427707), (73, 392553), (93, 308133), (189, 151621), (201, 142569), (217, 132057), (219, 130851), (279, 102711), (469, 61101), (511, 56079), (603, 47523), (651, 44019), (657, 43617), (837, 34237), (1407, 20367), (1533, 18693), (1809, 15841), (1953, 14673), (1971, 14539), (2077, 13797), (2263, 12663), (4221, 6789), (4599, 6231), (4891, 5859)]