21097160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{75347}}^1$

素因数の和:75365

約数の個数: 32

約数和(自身を含む): 54250560

約数和(自身を除く): 33153400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 75347, 150694, 301388, 376735, 527429, 602776, 753470, 1054858, 1506940, 2109716, 2637145, 3013880, 4219432, 5274290, 10548580, 21097160]

約数ペア:

[(1, 21097160), (2, 10548580), (4, 5274290), (5, 4219432), (7, 3013880), (8, 2637145), (10, 2109716), (14, 1506940), (20, 1054858), (28, 753470), (35, 602776), (40, 527429), (56, 376735), (70, 301388), (140, 150694), (280, 75347)]