256280745

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{16381}}^1$

素因数の和:16545

約数の個数: 32

約数和(自身を含む): 471801600

約数和(自身を除く): 215520855

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 149, 447, 745, 1043, 2235, 3129, 5215, 15645, 16381, 49143, 81905, 114667, 245715, 344001, 573335, 1720005, 2440769, 7322307, 12203845, 17085383, 36611535, 51256149, 85426915, 256280745]

約数ペア:

[(1, 256280745), (3, 85426915), (5, 51256149), (7, 36611535), (15, 17085383), (21, 12203845), (35, 7322307), (105, 2440769), (149, 1720005), (447, 573335), (745, 344001), (1043, 245715), (2235, 114667), (3129, 81905), (5215, 49143), (15645, 16381)]