9969920

素因数分解:

$2^8\times 5^1\times {\mathrm{7789}}^1$

素因数の和:7810

約数の個数: 36

約数和(自身を含む): 23884140

約数和(自身を除く): 13914220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 7789, 15578, 31156, 38945, 62312, 77890, 124624, 155780, 249248, 311560, 498496, 623120, 996992, 1246240, 1993984, 2492480, 4984960, 9969920]

約数ペア:

[(1, 9969920), (2, 4984960), (4, 2492480), (5, 1993984), (8, 1246240), (10, 996992), (16, 623120), (20, 498496), (32, 311560), (40, 249248), (64, 155780), (80, 124624), (128, 77890), (160, 62312), (256, 38945), (320, 31156), (640, 15578), (1280, 7789)]