12785440

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1949}}^1$

素因数の和:2005

約数の個数: 48

約数和(自身を含む): 30958200

約数和(自身を除く): 18172760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 1949, 3280, 3898, 6560, 7796, 9745, 15592, 19490, 31184, 38980, 62368, 77960, 79909, 155920, 159818, 311840, 319636, 399545, 639272, 799090, 1278544, 1598180, 2557088, 3196360, 6392720, 12785440]

約数ペア:

[(1, 12785440), (2, 6392720), (4, 3196360), (5, 2557088), (8, 1598180), (10, 1278544), (16, 799090), (20, 639272), (32, 399545), (40, 319636), (41, 311840), (80, 159818), (82, 155920), (160, 79909), (164, 77960), (205, 62368), (328, 38980), (410, 31184), (656, 19490), (820, 15592), (1312, 9745), (1640, 7796), (1949, 6560), (3280, 3898)]