19885041

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 64

約数和(自身を含む): 34836480

約数和(自身を除く): 14951439

約数列:

[1, 3, 9, 11, 23, 27, 33, 41, 69, 71, 99, 123, 207, 213, 253, 297, 369, 451, 621, 639, 759, 781, 943, 1107, 1353, 1633, 1917, 2277, 2343, 2829, 2911, 4059, 4899, 6831, 7029, 8487, 8733, 10373, 12177, 14697, 17963, 21087, 25461, 26199, 31119, 32021, 44091, 53889, 66953, 78597, 93357, 96063, 161667, 200859, 280071, 288189, 485001, 602577, 736483, 864567, 1807731, 2209449, 6628347, 19885041]

約数ペア:

[(1, 19885041), (3, 6628347), (9, 2209449), (11, 1807731), (23, 864567), (27, 736483), (33, 602577), (41, 485001), (69, 288189), (71, 280071), (99, 200859), (123, 161667), (207, 96063), (213, 93357), (253, 78597), (297, 66953), (369, 53889), (451, 44091), (621, 32021), (639, 31119), (759, 26199), (781, 25461), (943, 21087), (1107, 17963), (1353, 14697), (1633, 12177), (1917, 10373), (2277, 8733), (2343, 8487), (2829, 7029), (2911, 6831), (4059, 4899)]