1338880

素因数分解:

$2^9\times 5^1\times {\mathrm{523}}^1$

素因数の和:546

約数の個数: 40

約数和(自身を含む): 3216312

約数和(自身を除く): 1877432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 523, 640, 1046, 1280, 2092, 2560, 2615, 4184, 5230, 8368, 10460, 16736, 20920, 33472, 41840, 66944, 83680, 133888, 167360, 267776, 334720, 669440, 1338880]

約数ペア:

[(1, 1338880), (2, 669440), (4, 334720), (5, 267776), (8, 167360), (10, 133888), (16, 83680), (20, 66944), (32, 41840), (40, 33472), (64, 20920), (80, 16736), (128, 10460), (160, 8368), (256, 5230), (320, 4184), (512, 2615), (523, 2560), (640, 2092), (1046, 1280)]