81873920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{15991}}^1$

素因数の和:16016

約数の個数: 44

約数和(自身を含む): 196413744

約数和(自身を除く): 114539824

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, 15991, 31982, 63964, 79955, 127928, 159910, 255856, 319820, 511712, 639640, 1023424, 1279280, 2046848, 2558560, 4093696, 5117120, 8187392, 10234240, 16374784, 20468480, 40936960, 81873920]

約数ペア:

[(1, 81873920), (2, 40936960), (4, 20468480), (5, 16374784), (8, 10234240), (10, 8187392), (16, 5117120), (20, 4093696), (32, 2558560), (40, 2046848), (64, 1279280), (80, 1023424), (128, 639640), (160, 511712), (256, 319820), (320, 255856), (512, 159910), (640, 127928), (1024, 79955), (1280, 63964), (2560, 31982), (5120, 15991)]