21441004

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{223}}^1$

素因数の和:326

約数の個数: 36

約数和(自身を含む): 41555136

約数和(自身を除く): 20114132

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 223, 446, 559, 892, 1118, 1849, 2236, 2899, 3698, 5798, 7396, 9589, 11596, 19178, 24037, 38356, 48074, 96148, 124657, 249314, 412327, 498628, 824654, 1649308, 5360251, 10720502, 21441004]

約数ペア:

[(1, 21441004), (2, 10720502), (4, 5360251), (13, 1649308), (26, 824654), (43, 498628), (52, 412327), (86, 249314), (172, 124657), (223, 96148), (446, 48074), (559, 38356), (892, 24037), (1118, 19178), (1849, 11596), (2236, 9589), (2899, 7396), (3698, 5798)]