128539720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{421}}^1\times {\mathrm{449}}^1$

素因数の和:898

約数の個数: 64

約数和(自身を含む): 307638000

約数和(自身を除く): 179098280

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 421, 449, 680, 842, 898, 1684, 1796, 2105, 2245, 3368, 3592, 4210, 4490, 7157, 7633, 8420, 8980, 14314, 15266, 16840, 17960, 28628, 30532, 35785, 38165, 57256, 61064, 71570, 76330, 143140, 152660, 189029, 286280, 305320, 378058, 756116, 945145, 1512232, 1890290, 3213493, 3780580, 6426986, 7561160, 12853972, 16067465, 25707944, 32134930, 64269860, 128539720]

約数ペア:

[(1, 128539720), (2, 64269860), (4, 32134930), (5, 25707944), (8, 16067465), (10, 12853972), (17, 7561160), (20, 6426986), (34, 3780580), (40, 3213493), (68, 1890290), (85, 1512232), (136, 945145), (170, 756116), (340, 378058), (421, 305320), (449, 286280), (680, 189029), (842, 152660), (898, 143140), (1684, 76330), (1796, 71570), (2105, 61064), (2245, 57256), (3368, 38165), (3592, 35785), (4210, 30532), (4490, 28628), (7157, 17960), (7633, 16840), (8420, 15266), (8980, 14314)]