21700640

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10433}}^1$

素因数の和:10461

約数の個数: 48

約数和(自身を含む): 55216728

約数和(自身を除く): 33516088

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10433, 20866, 41732, 52165, 83464, 104330, 135629, 166928, 208660, 271258, 333856, 417320, 542516, 678145, 834640, 1085032, 1356290, 1669280, 2170064, 2712580, 4340128, 5425160, 10850320, 21700640]

約数ペア:

[(1, 21700640), (2, 10850320), (4, 5425160), (5, 4340128), (8, 2712580), (10, 2170064), (13, 1669280), (16, 1356290), (20, 1085032), (26, 834640), (32, 678145), (40, 542516), (52, 417320), (65, 333856), (80, 271258), (104, 208660), (130, 166928), (160, 135629), (208, 104330), (260, 83464), (416, 52165), (520, 41732), (1040, 20866), (2080, 10433)]