21155129088

素因数分解:

$2^8\times 3^1\times {\mathrm{409}}^1\times {\mathrm{67349}}^1$

素因数の和:67777

約数の個数: 72

約数和(自身を含む): 56441994000

約数和(自身を除く): 35286864912

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 409, 768, 818, 1227, 1636, 2454, 3272, 4908, 6544, 9816, 13088, 19632, 26176, 39264, 52352, 67349, 78528, 104704, 134698, 157056, 202047, 269396, 314112, 404094, 538792, 808188, 1077584, 1616376, 2155168, 3232752, 4310336, 6465504, 8620672, 12931008, 17241344, 25862016, 27545741, 51724032, 55091482, 82637223, 110182964, 165274446, 220365928, 330548892, 440731856, 661097784, 881463712, 1322195568, 1762927424, 2644391136, 3525854848, 5288782272, 7051709696, 10577564544, 21155129088]

約数ペア:

[(1, 21155129088), (2, 10577564544), (3, 7051709696), (4, 5288782272), (6, 3525854848), (8, 2644391136), (12, 1762927424), (16, 1322195568), (24, 881463712), (32, 661097784), (48, 440731856), (64, 330548892), (96, 220365928), (128, 165274446), (192, 110182964), (256, 82637223), (384, 55091482), (409, 51724032), (768, 27545741), (818, 25862016), (1227, 17241344), (1636, 12931008), (2454, 8620672), (3272, 6465504), (4908, 4310336), (6544, 3232752), (9816, 2155168), (13088, 1616376), (19632, 1077584), (26176, 808188), (39264, 538792), (52352, 404094), (67349, 314112), (78528, 269396), (104704, 202047), (134698, 157056)]