20199172

素因数分解:

$2^2\times 7^2\times {\mathrm{257}}^1\times {\mathrm{401}}^1$

素因数の和:676

約数の個数: 36

約数和(自身を含む): 41382684

約数和(自身を除く): 21183512

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 257, 401, 514, 802, 1028, 1604, 1799, 2807, 3598, 5614, 7196, 11228, 12593, 19649, 25186, 39298, 50372, 78596, 103057, 206114, 412228, 721399, 1442798, 2885596, 5049793, 10099586, 20199172]

約数ペア:

[(1, 20199172), (2, 10099586), (4, 5049793), (7, 2885596), (14, 1442798), (28, 721399), (49, 412228), (98, 206114), (196, 103057), (257, 78596), (401, 50372), (514, 39298), (802, 25186), (1028, 19649), (1604, 12593), (1799, 11228), (2807, 7196), (3598, 5614)]