821401040

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{73867}}^1$

素因数の和:74019

約数の個数: 40

約数和(自身を含む): 1923522720

約数和(自身を除く): 1102121680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 11120, 73867, 147734, 295468, 369335, 590936, 738670, 1181872, 1477340, 2954680, 5909360, 10267513, 20535026, 41070052, 51337565, 82140104, 102675130, 164280208, 205350260, 410700520, 821401040]

約数ペア:

[(1, 821401040), (2, 410700520), (4, 205350260), (5, 164280208), (8, 102675130), (10, 82140104), (16, 51337565), (20, 41070052), (40, 20535026), (80, 10267513), (139, 5909360), (278, 2954680), (556, 1477340), (695, 1181872), (1112, 738670), (1390, 590936), (2224, 369335), (2780, 295468), (5560, 147734), (11120, 73867)]