21616784

素因数分解:

$2^4\times 7^1\times {\mathrm{257}}^1\times {\mathrm{751}}^1$

素因数の和:1023

約数の個数: 40

約数和(自身を含む): 48115968

約数和(自身を除く): 26499184

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 257, 514, 751, 1028, 1502, 1799, 2056, 3004, 3598, 4112, 5257, 6008, 7196, 10514, 12016, 14392, 21028, 28784, 42056, 84112, 193007, 386014, 772028, 1351049, 1544056, 2702098, 3088112, 5404196, 10808392, 21616784]

約数ペア:

[(1, 21616784), (2, 10808392), (4, 5404196), (7, 3088112), (8, 2702098), (14, 1544056), (16, 1351049), (28, 772028), (56, 386014), (112, 193007), (257, 84112), (514, 42056), (751, 28784), (1028, 21028), (1502, 14392), (1799, 12016), (2056, 10514), (3004, 7196), (3598, 6008), (4112, 5257)]