80775520

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{10303}}^1$

素因数の和:10332

約数の個数: 72

約数和(自身を含む): 222009984

約数和(自身を除く): 141234464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 10303, 20606, 41212, 51515, 72121, 82424, 103030, 144242, 164848, 206060, 288484, 329696, 360605, 412120, 504847, 576968, 721210, 824240, 1009694, 1153936, 1442420, 1648480, 2019388, 2307872, 2524235, 2884840, 4038776, 5048470, 5769680, 8077552, 10096940, 11539360, 16155104, 20193880, 40387760, 80775520]

約数ペア:

[(1, 80775520), (2, 40387760), (4, 20193880), (5, 16155104), (7, 11539360), (8, 10096940), (10, 8077552), (14, 5769680), (16, 5048470), (20, 4038776), (28, 2884840), (32, 2524235), (35, 2307872), (40, 2019388), (49, 1648480), (56, 1442420), (70, 1153936), (80, 1009694), (98, 824240), (112, 721210), (140, 576968), (160, 504847), (196, 412120), (224, 360605), (245, 329696), (280, 288484), (392, 206060), (490, 164848), (560, 144242), (784, 103030), (980, 82424), (1120, 72121), (1568, 51515), (1960, 41212), (3920, 20606), (7840, 10303)]