20861848

素因数分解:

$2^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2801}}^1$

素因数の和:2840

約数の個数: 48

約数和(自身を含む): 47914200

約数和(自身を除く): 27052352

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 49, 56, 76, 98, 133, 152, 196, 266, 392, 532, 931, 1064, 1862, 2801, 3724, 5602, 7448, 11204, 19607, 22408, 39214, 53219, 78428, 106438, 137249, 156856, 212876, 274498, 372533, 425752, 548996, 745066, 1097992, 1490132, 2607731, 2980264, 5215462, 10430924, 20861848]

約数ペア:

[(1, 20861848), (2, 10430924), (4, 5215462), (7, 2980264), (8, 2607731), (14, 1490132), (19, 1097992), (28, 745066), (38, 548996), (49, 425752), (56, 372533), (76, 274498), (98, 212876), (133, 156856), (152, 137249), (196, 106438), (266, 78428), (392, 53219), (532, 39214), (931, 22408), (1064, 19607), (1862, 11204), (2801, 7448), (3724, 5602)]