21927915

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{1867}}^1$

素因数の和:1913

約数の個数: 40

約数和(自身を含む): 40685040

約数和(自身を除く): 18757125

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 261, 405, 435, 783, 1305, 1867, 2349, 3915, 5601, 9335, 11745, 16803, 28005, 50409, 54143, 84015, 151227, 162429, 252045, 270715, 487287, 756135, 812145, 1461861, 2436435, 4385583, 7309305, 21927915]

約数ペア:

[(1, 21927915), (3, 7309305), (5, 4385583), (9, 2436435), (15, 1461861), (27, 812145), (29, 756135), (45, 487287), (81, 270715), (87, 252045), (135, 162429), (145, 151227), (261, 84015), (405, 54143), (435, 50409), (783, 28005), (1305, 16803), (1867, 11745), (2349, 9335), (3915, 5601)]