20193880

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10303}}^1$

素因数の和:10328

約数の個数: 48

約数和(自身を含む): 52859520

約数和(自身を除く): 32665640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10303, 20606, 41212, 51515, 72121, 82424, 103030, 144242, 206060, 288484, 360605, 412120, 504847, 576968, 721210, 1009694, 1442420, 2019388, 2524235, 2884840, 4038776, 5048470, 10096940, 20193880]

約数ペア:

[(1, 20193880), (2, 10096940), (4, 5048470), (5, 4038776), (7, 2884840), (8, 2524235), (10, 2019388), (14, 1442420), (20, 1009694), (28, 721210), (35, 576968), (40, 504847), (49, 412120), (56, 360605), (70, 288484), (98, 206060), (140, 144242), (196, 103030), (245, 82424), (280, 72121), (392, 51515), (490, 41212), (980, 20606), (1960, 10303)]