196404920

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{421}}^1$

素因数の和:648

約数の個数: 64

約数和(自身を含む): 451202400

約数和(自身を除く): 254797480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 109, 214, 218, 421, 428, 436, 535, 545, 842, 856, 872, 1070, 1090, 1684, 2105, 2140, 2180, 3368, 4210, 4280, 4360, 8420, 11663, 16840, 23326, 45047, 45889, 46652, 58315, 90094, 91778, 93304, 116630, 180188, 183556, 225235, 229445, 233260, 360376, 367112, 450470, 458890, 466520, 900940, 917780, 1801880, 1835560, 4910123, 9820246, 19640492, 24550615, 39280984, 49101230, 98202460, 196404920]

約数ペア:

[(1, 196404920), (2, 98202460), (4, 49101230), (5, 39280984), (8, 24550615), (10, 19640492), (20, 9820246), (40, 4910123), (107, 1835560), (109, 1801880), (214, 917780), (218, 900940), (421, 466520), (428, 458890), (436, 450470), (535, 367112), (545, 360376), (842, 233260), (856, 229445), (872, 225235), (1070, 183556), (1090, 180188), (1684, 116630), (2105, 93304), (2140, 91778), (2180, 90094), (3368, 58315), (4210, 46652), (4280, 45889), (4360, 45047), (8420, 23326), (11663, 16840)]