20180576

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:511

約数の個数: 48

約数和(自身を含む): 43218000

約数和(自身を除く): 23037424

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 139, 208, 278, 349, 416, 556, 698, 1112, 1396, 1807, 2224, 2792, 3614, 4448, 4537, 5584, 7228, 9074, 11168, 14456, 18148, 28912, 36296, 48511, 57824, 72592, 97022, 145184, 194044, 388088, 630643, 776176, 1261286, 1552352, 2522572, 5045144, 10090288, 20180576]

約数ペア:

[(1, 20180576), (2, 10090288), (4, 5045144), (8, 2522572), (13, 1552352), (16, 1261286), (26, 776176), (32, 630643), (52, 388088), (104, 194044), (139, 145184), (208, 97022), (278, 72592), (349, 57824), (416, 48511), (556, 36296), (698, 28912), (1112, 18148), (1396, 14456), (1807, 11168), (2224, 9074), (2792, 7228), (3614, 5584), (4448, 4537)]