21198331

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{587}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 27349056

約数和(自身を除く): 6150725

約数列:

[1, 7, 11, 49, 67, 77, 469, 539, 587, 737, 3283, 4109, 5159, 6457, 28763, 36113, 39329, 45199, 275303, 316393, 432619, 1927121, 3028333, 21198331]

約数ペア:

[(1, 21198331), (7, 3028333), (11, 1927121), (49, 432619), (67, 316393), (77, 275303), (469, 45199), (539, 39329), (587, 36113), (737, 28763), (3283, 6457), (4109, 5159)]