51105280

素因数分解:

$2^9\times 5^1\times {\mathrm{19963}}^1$

素因数の和:19986

約数の個数: 40

約数和(自身を含む): 122539032

約数和(自身を除く): 71433752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 19963, 39926, 79852, 99815, 159704, 199630, 319408, 399260, 638816, 798520, 1277632, 1597040, 2555264, 3194080, 5110528, 6388160, 10221056, 12776320, 25552640, 51105280]

約数ペア:

[(1, 51105280), (2, 25552640), (4, 12776320), (5, 10221056), (8, 6388160), (10, 5110528), (16, 3194080), (20, 2555264), (32, 1597040), (40, 1277632), (64, 798520), (80, 638816), (128, 399260), (160, 319408), (256, 199630), (320, 159704), (512, 99815), (640, 79852), (1280, 39926), (2560, 19963)]