20917328

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{829}}^1$

素因数の和:939

約数の個数: 40

約数和(自身を含む): 43226400

約数和(自身を除く): 22309072

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 83, 152, 166, 304, 332, 664, 829, 1328, 1577, 1658, 3154, 3316, 6308, 6632, 12616, 13264, 15751, 25232, 31502, 63004, 68807, 126008, 137614, 252016, 275228, 550456, 1100912, 1307333, 2614666, 5229332, 10458664, 20917328]

約数ペア:

[(1, 20917328), (2, 10458664), (4, 5229332), (8, 2614666), (16, 1307333), (19, 1100912), (38, 550456), (76, 275228), (83, 252016), (152, 137614), (166, 126008), (304, 68807), (332, 63004), (664, 31502), (829, 25232), (1328, 15751), (1577, 13264), (1658, 12616), (3154, 6632), (3316, 6308)]