20534478

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:197

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 25084722

約数列:

[1, 2, 3, 6, 19, 38, 43, 57, 59, 71, 86, 114, 118, 129, 142, 177, 213, 258, 354, 426, 817, 1121, 1349, 1634, 2242, 2451, 2537, 2698, 3053, 3363, 4047, 4189, 4902, 5074, 6106, 6726, 7611, 8094, 8378, 9159, 12567, 15222, 18318, 25134, 48203, 58007, 79591, 96406, 116014, 144609, 159182, 174021, 180127, 238773, 289218, 348042, 360254, 477546, 540381, 1080762, 3422413, 6844826, 10267239, 20534478]

約数ペア:

[(1, 20534478), (2, 10267239), (3, 6844826), (6, 3422413), (19, 1080762), (38, 540381), (43, 477546), (57, 360254), (59, 348042), (71, 289218), (86, 238773), (114, 180127), (118, 174021), (129, 159182), (142, 144609), (177, 116014), (213, 96406), (258, 79591), (354, 58007), (426, 48203), (817, 25134), (1121, 18318), (1349, 15222), (1634, 12567), (2242, 9159), (2451, 8378), (2537, 8094), (2698, 7611), (3053, 6726), (3363, 6106), (4047, 5074), (4189, 4902)]