20959904

素因数分解:

$2^5\times 7^1\times {\mathrm{137}}^1\times {\mathrm{683}}^1$

素因数の和:837

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 26613664

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 137, 224, 274, 548, 683, 959, 1096, 1366, 1918, 2192, 2732, 3836, 4384, 4781, 5464, 7672, 9562, 10928, 15344, 19124, 21856, 30688, 38248, 76496, 93571, 152992, 187142, 374284, 654997, 748568, 1309994, 1497136, 2619988, 2994272, 5239976, 10479952, 20959904]

約数ペア:

[(1, 20959904), (2, 10479952), (4, 5239976), (7, 2994272), (8, 2619988), (14, 1497136), (16, 1309994), (28, 748568), (32, 654997), (56, 374284), (112, 187142), (137, 152992), (224, 93571), (274, 76496), (548, 38248), (683, 30688), (959, 21856), (1096, 19124), (1366, 15344), (1918, 10928), (2192, 9562), (2732, 7672), (3836, 5464), (4384, 4781)]