20781605380

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{2347}}^1\times {\mathrm{19249}}^1$

素因数の和:21628

約数の個数: 48

約数和(自身を含む): 45560592000

約数和(自身を除く): 24778986620

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 2347, 4694, 9388, 11735, 19249, 23470, 38498, 46940, 53981, 76996, 96245, 107962, 192490, 215924, 269905, 384980, 442727, 539810, 885454, 1079620, 1770908, 2213635, 4427270, 8854540, 45177403, 90354806, 180709612, 225887015, 451774030, 903548060, 1039080269, 2078160538, 4156321076, 5195401345, 10390802690, 20781605380]

約数ペア:

[(1, 20781605380), (2, 10390802690), (4, 5195401345), (5, 4156321076), (10, 2078160538), (20, 1039080269), (23, 903548060), (46, 451774030), (92, 225887015), (115, 180709612), (230, 90354806), (460, 45177403), (2347, 8854540), (4694, 4427270), (9388, 2213635), (11735, 1770908), (19249, 1079620), (23470, 885454), (38498, 539810), (46940, 442727), (53981, 384980), (76996, 269905), (96245, 215924), (107962, 192490)]