18651556

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:281

約数の個数: 72

約数和(自身を含む): 42632352

約数和(自身を除く): 23980796

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 41, 44, 49, 77, 82, 98, 154, 164, 196, 211, 287, 308, 422, 451, 539, 574, 844, 902, 1078, 1148, 1477, 1804, 2009, 2156, 2321, 2954, 3157, 4018, 4642, 5908, 6314, 8036, 8651, 9284, 10339, 12628, 16247, 17302, 20678, 22099, 32494, 34604, 41356, 44198, 60557, 64988, 88396, 95161, 113729, 121114, 190322, 227458, 242228, 380644, 423899, 454916, 666127, 847798, 1332254, 1695596, 2664508, 4662889, 9325778, 18651556]

約数ペア:

[(1, 18651556), (2, 9325778), (4, 4662889), (7, 2664508), (11, 1695596), (14, 1332254), (22, 847798), (28, 666127), (41, 454916), (44, 423899), (49, 380644), (77, 242228), (82, 227458), (98, 190322), (154, 121114), (164, 113729), (196, 95161), (211, 88396), (287, 64988), (308, 60557), (422, 44198), (451, 41356), (539, 34604), (574, 32494), (844, 22099), (902, 20678), (1078, 17302), (1148, 16247), (1477, 12628), (1804, 10339), (2009, 9284), (2156, 8651), (2321, 8036), (2954, 6314), (3157, 5908), (4018, 4642)]