20189774920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72106339}}^1$

素因数の和:72106357

約数の個数: 32

約数和(自身を含む): 51916564800

約数和(自身を除く): 31726789880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72106339, 144212678, 288425356, 360531695, 504744373, 576850712, 721063390, 1009488746, 1442126780, 2018977492, 2523721865, 2884253560, 4037954984, 5047443730, 10094887460, 20189774920]

約数ペア:

[(1, 20189774920), (2, 10094887460), (4, 5047443730), (5, 4037954984), (7, 2884253560), (8, 2523721865), (10, 2018977492), (14, 1442126780), (20, 1009488746), (28, 721063390), (35, 576850712), (40, 504744373), (56, 360531695), (70, 288425356), (140, 144212678), (280, 72106339)]