201918920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{721139}}^1$

素因数の和:721157

約数の個数: 32

約数和(自身を含む): 519220800

約数和(自身を除く): 317301880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 721139, 1442278, 2884556, 3605695, 5047973, 5769112, 7211390, 10095946, 14422780, 20191892, 25239865, 28845560, 40383784, 50479730, 100959460, 201918920]

約数ペア:

[(1, 201918920), (2, 100959460), (4, 50479730), (5, 40383784), (7, 28845560), (8, 25239865), (10, 20191892), (14, 14422780), (20, 10095946), (28, 7211390), (35, 5769112), (40, 5047973), (56, 3605695), (70, 2884556), (140, 1442278), (280, 721139)]