20896578

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:359

約数の個数: 48

約数和(自身を含む): 46702656

約数和(自身を除く): 25806078

約数列:

[1, 2, 3, 6, 9, 18, 71, 83, 142, 166, 197, 213, 249, 394, 426, 498, 591, 639, 747, 1182, 1278, 1494, 1773, 3546, 5893, 11786, 13987, 16351, 17679, 27974, 32702, 35358, 41961, 49053, 53037, 83922, 98106, 106074, 125883, 147159, 251766, 294318, 1160921, 2321842, 3482763, 6965526, 10448289, 20896578]

約数ペア:

[(1, 20896578), (2, 10448289), (3, 6965526), (6, 3482763), (9, 2321842), (18, 1160921), (71, 294318), (83, 251766), (142, 147159), (166, 125883), (197, 106074), (213, 98106), (249, 83922), (394, 53037), (426, 49053), (498, 41961), (591, 35358), (639, 32702), (747, 27974), (1182, 17679), (1278, 16351), (1494, 13987), (1773, 11786), (3546, 5893)]