81418240

素因数分解:

$2^{11}\times 5^1\times {\mathrm{7951}}^1$

素因数の和:7978

約数の個数: 48

約数和(自身を含む): 195380640

約数和(自身を除く): 113962400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2048, 2560, 5120, 7951, 10240, 15902, 31804, 39755, 63608, 79510, 127216, 159020, 254432, 318040, 508864, 636080, 1017728, 1272160, 2035456, 2544320, 4070912, 5088640, 8141824, 10177280, 16283648, 20354560, 40709120, 81418240]

約数ペア:

[(1, 81418240), (2, 40709120), (4, 20354560), (5, 16283648), (8, 10177280), (10, 8141824), (16, 5088640), (20, 4070912), (32, 2544320), (40, 2035456), (64, 1272160), (80, 1017728), (128, 636080), (160, 508864), (256, 318040), (320, 254432), (512, 159020), (640, 127216), (1024, 79510), (1280, 63608), (2048, 39755), (2560, 31804), (5120, 15902), (7951, 10240)]