21039914

素因数分解:

$2^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:279

約数の個数: 48

約数和(自身を含む): 39632328

約数和(自身を除く): 18592414

約数列:

[1, 2, 7, 14, 17, 34, 49, 73, 98, 119, 146, 173, 238, 346, 511, 833, 1022, 1211, 1241, 1666, 2422, 2482, 2941, 3577, 5882, 7154, 8477, 8687, 12629, 16954, 17374, 20587, 25258, 41174, 60809, 88403, 121618, 144109, 176806, 214693, 288218, 429386, 618821, 1237642, 1502851, 3005702, 10519957, 21039914]

約数ペア:

[(1, 21039914), (2, 10519957), (7, 3005702), (14, 1502851), (17, 1237642), (34, 618821), (49, 429386), (73, 288218), (98, 214693), (119, 176806), (146, 144109), (173, 121618), (238, 88403), (346, 60809), (511, 41174), (833, 25258), (1022, 20587), (1211, 17374), (1241, 16954), (1666, 12629), (2422, 8687), (2482, 8477), (2941, 7154), (3577, 5882)]