20221280

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2689}}^1$

素因数の和:2751

約数の個数: 48

約数和(自身を含む): 48807360

約数和(自身を除く): 28586080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2689, 3760, 5378, 7520, 10756, 13445, 21512, 26890, 43024, 53780, 86048, 107560, 126383, 215120, 252766, 430240, 505532, 631915, 1011064, 1263830, 2022128, 2527660, 4044256, 5055320, 10110640, 20221280]

約数ペア:

[(1, 20221280), (2, 10110640), (4, 5055320), (5, 4044256), (8, 2527660), (10, 2022128), (16, 1263830), (20, 1011064), (32, 631915), (40, 505532), (47, 430240), (80, 252766), (94, 215120), (160, 126383), (188, 107560), (235, 86048), (376, 53780), (470, 43024), (752, 26890), (940, 21512), (1504, 13445), (1880, 10756), (2689, 7520), (3760, 5378)]