19980776

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{60917}}^1$

素因数の和:60964

約数の個数: 16

約数和(自身を含む): 38378340

約数和(自身を除く): 18397564

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 60917, 121834, 243668, 487336, 2497597, 4995194, 9990388, 19980776]

約数ペア:

[(1, 19980776), (2, 9990388), (4, 4995194), (8, 2497597), (41, 487336), (82, 243668), (164, 121834), (328, 60917)]