21086492

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{239}}^1$

素因数の和:410

約数の個数: 48

約数和(自身を含む): 44513280

約数和(自身を除く): 23426788

約数列:

[1, 2, 4, 7, 14, 23, 28, 46, 92, 137, 161, 239, 274, 322, 478, 548, 644, 956, 959, 1673, 1918, 3151, 3346, 3836, 5497, 6302, 6692, 10994, 12604, 21988, 22057, 32743, 38479, 44114, 65486, 76958, 88228, 130972, 153916, 229201, 458402, 753089, 916804, 1506178, 3012356, 5271623, 10543246, 21086492]

約数ペア:

[(1, 21086492), (2, 10543246), (4, 5271623), (7, 3012356), (14, 1506178), (23, 916804), (28, 753089), (46, 458402), (92, 229201), (137, 153916), (161, 130972), (239, 88228), (274, 76958), (322, 65486), (478, 44114), (548, 38479), (644, 32743), (956, 22057), (959, 21988), (1673, 12604), (1918, 10994), (3151, 6692), (3346, 6302), (3836, 5497)]