640939248

素因数分解:

$2^4\times 3^2\times {\mathrm{4450967}}^1$

素因数の和:4450981

約数の個数: 30

約数和(自身を含む): 1793740104

約数和(自身を除く): 1152800856

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 4450967, 8901934, 13352901, 17803868, 26705802, 35607736, 40058703, 53411604, 71215472, 80117406, 106823208, 160234812, 213646416, 320469624, 640939248]

約数ペア:

[(1, 640939248), (2, 320469624), (3, 213646416), (4, 160234812), (6, 106823208), (8, 80117406), (9, 71215472), (12, 53411604), (16, 40058703), (18, 35607736), (24, 26705802), (36, 17803868), (48, 13352901), (72, 8901934), (144, 4450967)]