199331318

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1\times {\mathrm{397}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 321615840

約数和(自身を除く): 122284522

約数列:

[1, 2, 19, 38, 73, 146, 181, 362, 397, 794, 1387, 2774, 3439, 6878, 7543, 13213, 15086, 26426, 28981, 57962, 71857, 143714, 251047, 502094, 550639, 1101278, 1365283, 2730566, 5245561, 10491122, 99665659, 199331318]

約数ペア:

[(1, 199331318), (2, 99665659), (19, 10491122), (38, 5245561), (73, 2730566), (146, 1365283), (181, 1101278), (362, 550639), (397, 502094), (794, 251047), (1387, 143714), (2774, 71857), (3439, 57962), (6878, 28981), (7543, 26426), (13213, 15086)]