21856520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78059}}^1$

素因数の和:78077

約数の個数: 32

約数和(自身を含む): 56203200

約数和(自身を除く): 34346680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78059, 156118, 312236, 390295, 546413, 624472, 780590, 1092826, 1561180, 2185652, 2732065, 3122360, 4371304, 5464130, 10928260, 21856520]

約数ペア:

[(1, 21856520), (2, 10928260), (4, 5464130), (5, 4371304), (7, 3122360), (8, 2732065), (10, 2185652), (14, 1561180), (20, 1092826), (28, 780590), (35, 624472), (40, 546413), (56, 390295), (70, 312236), (140, 156118), (280, 78059)]