28339983

素因数分解:

$3^3\times 7^2\times {\mathrm{31}}^1\times {\mathrm{691}}^1$

素因数の和:745

約数の個数: 48

約数和(自身を含む): 50488320

約数和(自身を除く): 22148337

約数列:

[1, 3, 7, 9, 21, 27, 31, 49, 63, 93, 147, 189, 217, 279, 441, 651, 691, 837, 1323, 1519, 1953, 2073, 4557, 4837, 5859, 6219, 13671, 14511, 18657, 21421, 33859, 41013, 43533, 64263, 101577, 130599, 149947, 192789, 304731, 449841, 578367, 914193, 1049629, 1349523, 3148887, 4048569, 9446661, 28339983]

約数ペア:

[(1, 28339983), (3, 9446661), (7, 4048569), (9, 3148887), (21, 1349523), (27, 1049629), (31, 914193), (49, 578367), (63, 449841), (93, 304731), (147, 192789), (189, 149947), (217, 130599), (279, 101577), (441, 64263), (651, 43533), (691, 41013), (837, 33859), (1323, 21421), (1519, 18657), (1953, 14511), (2073, 13671), (4557, 6219), (4837, 5859)]