78286720

素因数分解:

$2^7\times 5^1\times {\mathrm{122323}}^1$

素因数の和:122342

約数の個数: 32

約数和(自身を含む): 187155720

約数和(自身を除く): 108869000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 122323, 244646, 489292, 611615, 978584, 1223230, 1957168, 2446460, 3914336, 4892920, 7828672, 9785840, 15657344, 19571680, 39143360, 78286720]

約数ペア:

[(1, 78286720), (2, 39143360), (4, 19571680), (5, 15657344), (8, 9785840), (10, 7828672), (16, 4892920), (20, 3914336), (32, 2446460), (40, 1957168), (64, 1223230), (80, 978584), (128, 611615), (160, 489292), (320, 244646), (640, 122323)]