20473760

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3121}}^1$

素因数の和:3177

約数の個数: 48

約数和(自身を含む): 49564872

約数和(自身を除く): 29091112

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 3121, 3280, 6242, 6560, 12484, 15605, 24968, 31210, 49936, 62420, 99872, 124840, 127961, 249680, 255922, 499360, 511844, 639805, 1023688, 1279610, 2047376, 2559220, 4094752, 5118440, 10236880, 20473760]

約数ペア:

[(1, 20473760), (2, 10236880), (4, 5118440), (5, 4094752), (8, 2559220), (10, 2047376), (16, 1279610), (20, 1023688), (32, 639805), (40, 511844), (41, 499360), (80, 255922), (82, 249680), (160, 127961), (164, 124840), (205, 99872), (328, 62420), (410, 49936), (656, 31210), (820, 24968), (1312, 15605), (1640, 12484), (3121, 6560), (3280, 6242)]