17806720

素因数分解:

$2^7\times 5^1\times {\mathrm{27823}}^1$

素因数の和:27842

約数の個数: 32

約数和(自身を含む): 42570720

約数和(自身を除く): 24764000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 27823, 55646, 111292, 139115, 222584, 278230, 445168, 556460, 890336, 1112920, 1780672, 2225840, 3561344, 4451680, 8903360, 17806720]

約数ペア:

[(1, 17806720), (2, 8903360), (4, 4451680), (5, 3561344), (8, 2225840), (10, 1780672), (16, 1112920), (20, 890336), (32, 556460), (40, 445168), (64, 278230), (80, 222584), (128, 139115), (160, 111292), (320, 55646), (640, 27823)]