21912520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78259}}^1$

素因数の和:78277

約数の個数: 32

約数和(自身を含む): 56347200

約数和(自身を除く): 34434680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78259, 156518, 313036, 391295, 547813, 626072, 782590, 1095626, 1565180, 2191252, 2739065, 3130360, 4382504, 5478130, 10956260, 21912520]

約数ペア:

[(1, 21912520), (2, 10956260), (4, 5478130), (5, 4382504), (7, 3130360), (8, 2739065), (10, 2191252), (14, 1565180), (20, 1095626), (28, 782590), (35, 626072), (40, 547813), (56, 391295), (70, 313036), (140, 156518), (280, 78259)]