20523580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13327}}^1$

素因数の和:13354

約数の個数: 48

約数和(自身を含む): 53738496

約数和(自身を除く): 33214916

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 13327, 26654, 53308, 66635, 93289, 133270, 146597, 186578, 266540, 293194, 373156, 466445, 586388, 732985, 932890, 1026179, 1465970, 1865780, 2052358, 2931940, 4104716, 5130895, 10261790, 20523580]

約数ペア:

[(1, 20523580), (2, 10261790), (4, 5130895), (5, 4104716), (7, 2931940), (10, 2052358), (11, 1865780), (14, 1465970), (20, 1026179), (22, 932890), (28, 732985), (35, 586388), (44, 466445), (55, 373156), (70, 293194), (77, 266540), (110, 186578), (140, 146597), (154, 133270), (220, 93289), (308, 66635), (385, 53308), (770, 26654), (1540, 13327)]