64967680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{12689}}^1$

素因数の和:12714

約数の個数: 44

約数和(自身を含む): 155858580

約数和(自身を除く): 90890900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 12689, 25378, 50756, 63445, 101512, 126890, 203024, 253780, 406048, 507560, 812096, 1015120, 1624192, 2030240, 3248384, 4060480, 6496768, 8120960, 12993536, 16241920, 32483840, 64967680]

約数ペア:

[(1, 64967680), (2, 32483840), (4, 16241920), (5, 12993536), (8, 8120960), (10, 6496768), (16, 4060480), (20, 3248384), (32, 2030240), (40, 1624192), (64, 1015120), (80, 812096), (128, 507560), (160, 406048), (256, 253780), (320, 203024), (512, 126890), (640, 101512), (1024, 63445), (1280, 50756), (2560, 25378), (5120, 12689)]