64647680

素因数分解:

$2^9\times 5^1\times {\mathrm{25253}}^1$

素因数の和:25276

約数の個数: 40

約数和(自身を含む): 155009052

約数和(自身を除く): 90361372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 25253, 50506, 101012, 126265, 202024, 252530, 404048, 505060, 808096, 1010120, 1616192, 2020240, 3232384, 4040480, 6464768, 8080960, 12929536, 16161920, 32323840, 64647680]

約数ペア:

[(1, 64647680), (2, 32323840), (4, 16161920), (5, 12929536), (8, 8080960), (10, 6464768), (16, 4040480), (20, 3232384), (32, 2020240), (40, 1616192), (64, 1010120), (80, 808096), (128, 505060), (160, 404048), (256, 252530), (320, 202024), (512, 126265), (640, 101012), (1280, 50506), (2560, 25253)]