20868016

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2447}}^1$

素因数の和:2509

約数の個数: 40

約数和(自身を含む): 44622144

約数和(自身を除く): 23754128

約数列:

[1, 2, 4, 8, 13, 16, 26, 41, 52, 82, 104, 164, 208, 328, 533, 656, 1066, 2132, 2447, 4264, 4894, 8528, 9788, 19576, 31811, 39152, 63622, 100327, 127244, 200654, 254488, 401308, 508976, 802616, 1304251, 1605232, 2608502, 5217004, 10434008, 20868016]

約数ペア:

[(1, 20868016), (2, 10434008), (4, 5217004), (8, 2608502), (13, 1605232), (16, 1304251), (26, 802616), (41, 508976), (52, 401308), (82, 254488), (104, 200654), (164, 127244), (208, 100327), (328, 63622), (533, 39152), (656, 31811), (1066, 19576), (2132, 9788), (2447, 8528), (4264, 4894)]