721653896

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{397}}^1\times {\mathrm{11959}}^1$

素因数の和:12381

約数の個数: 32

約数和(自身を含む): 1428024000

約数和(自身を除く): 706370104

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 397, 794, 1588, 3176, 7543, 11959, 15086, 23918, 30172, 47836, 60344, 95672, 227221, 454442, 908884, 1817768, 4747723, 9495446, 18990892, 37981784, 90206737, 180413474, 360826948, 721653896]

約数ペア:

[(1, 721653896), (2, 360826948), (4, 180413474), (8, 90206737), (19, 37981784), (38, 18990892), (76, 9495446), (152, 4747723), (397, 1817768), (794, 908884), (1588, 454442), (3176, 227221), (7543, 95672), (11959, 60344), (15086, 47836), (23918, 30172)]