27788761

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 14015015

約数列:

[1, 7, 11, 13, 17, 23, 71, 77, 91, 119, 143, 161, 187, 221, 253, 299, 391, 497, 781, 923, 1001, 1207, 1309, 1547, 1633, 1771, 2093, 2431, 2737, 3289, 4301, 5083, 5467, 6461, 8449, 10153, 11431, 13277, 15691, 17017, 17963, 21229, 23023, 27761, 30107, 35581, 55913, 71071, 92939, 109837, 125741, 148603, 172601, 194327, 233519, 305371, 360893, 391391, 1208207, 1634633, 2137597, 2526251, 3969823, 27788761]

約数ペア:

[(1, 27788761), (7, 3969823), (11, 2526251), (13, 2137597), (17, 1634633), (23, 1208207), (71, 391391), (77, 360893), (91, 305371), (119, 233519), (143, 194327), (161, 172601), (187, 148603), (221, 125741), (253, 109837), (299, 92939), (391, 71071), (497, 55913), (781, 35581), (923, 30107), (1001, 27761), (1207, 23023), (1309, 21229), (1547, 17963), (1633, 17017), (1771, 15691), (2093, 13277), (2431, 11431), (2737, 10153), (3289, 8449), (4301, 6461), (5083, 5467)]