28806320

素因数分解:

$2^4\times 5^1\times {\mathrm{397}}^1\times {\mathrm{907}}^1$

素因数の和:1317

約数の個数: 40

約数和(自身を含む): 67217424

約数和(自身を除く): 38411104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 397, 794, 907, 1588, 1814, 1985, 3176, 3628, 3970, 4535, 6352, 7256, 7940, 9070, 14512, 15880, 18140, 31760, 36280, 72560, 360079, 720158, 1440316, 1800395, 2880632, 3600790, 5761264, 7201580, 14403160, 28806320]

約数ペア:

[(1, 28806320), (2, 14403160), (4, 7201580), (5, 5761264), (8, 3600790), (10, 2880632), (16, 1800395), (20, 1440316), (40, 720158), (80, 360079), (397, 72560), (794, 36280), (907, 31760), (1588, 18140), (1814, 15880), (1985, 14512), (3176, 9070), (3628, 7940), (3970, 7256), (4535, 6352)]