19854080

素因数分解:

$2^8\times 5^1\times {\mathrm{15511}}^1$

素因数の和:15532

約数の個数: 36

約数和(自身を含む): 47559792

約数和(自身を除く): 27705712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 15511, 31022, 62044, 77555, 124088, 155110, 248176, 310220, 496352, 620440, 992704, 1240880, 1985408, 2481760, 3970816, 4963520, 9927040, 19854080]

約数ペア:

[(1, 19854080), (2, 9927040), (4, 4963520), (5, 3970816), (8, 2481760), (10, 1985408), (16, 1240880), (20, 992704), (32, 620440), (40, 496352), (64, 310220), (80, 248176), (128, 155110), (160, 124088), (256, 77555), (320, 62044), (640, 31022), (1280, 15511)]