19767965

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 28283904

約数和(自身を除く): 8515939

約数列:

[1, 5, 7, 35, 47, 61, 197, 235, 305, 329, 427, 985, 1379, 1645, 2135, 2867, 6895, 9259, 12017, 14335, 20069, 46295, 60085, 64813, 84119, 100345, 324065, 420595, 564799, 2823995, 3953593, 19767965]

約数ペア:

[(1, 19767965), (5, 3953593), (7, 2823995), (35, 564799), (47, 420595), (61, 324065), (197, 100345), (235, 84119), (305, 64813), (329, 60085), (427, 46295), (985, 20069), (1379, 14335), (1645, 12017), (2135, 9259), (2867, 6895)]