21997166

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{223}}^1$

素因数の和:336

約数の個数: 32

約数和(自身を含む): 35954688

約数和(自身を除く): 13957522

約数列:

[1, 2, 31, 37, 43, 62, 74, 86, 223, 446, 1147, 1333, 1591, 2294, 2666, 3182, 6913, 8251, 9589, 13826, 16502, 19178, 49321, 98642, 255781, 297259, 354793, 511562, 594518, 709586, 10998583, 21997166]

約数ペア:

[(1, 21997166), (2, 10998583), (31, 709586), (37, 594518), (43, 511562), (62, 354793), (74, 297259), (86, 255781), (223, 98642), (446, 49321), (1147, 19178), (1333, 16502), (1591, 13826), (2294, 9589), (2666, 8251), (3182, 6913)]