21000435463

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^3\times {\mathrm{79}}^1$

素因数の和:257

約数の個数: 64

約数和(自身を含む): 27127296000

約数和(自身を除く): 6126860537

約数列:

[1, 7, 19, 29, 41, 79, 133, 203, 287, 551, 553, 779, 1189, 1501, 1681, 2291, 3239, 3857, 5453, 8323, 10507, 11767, 16037, 22591, 22673, 31939, 43529, 48749, 61541, 68921, 93931, 132799, 158137, 223573, 304703, 341243, 430787, 482447, 657517, 926231, 929593, 1309499, 1784689, 1998709, 2523181, 3851171, 5444759, 6483617, 9166493, 12492823, 13990963, 17662267, 26958197, 37975471, 38113313, 73172249, 103450421, 157898011, 265828297, 512205743, 724152947, 1105286077, 3000062209, 21000435463]

約数ペア:

[(1, 21000435463), (7, 3000062209), (19, 1105286077), (29, 724152947), (41, 512205743), (79, 265828297), (133, 157898011), (203, 103450421), (287, 73172249), (551, 38113313), (553, 37975471), (779, 26958197), (1189, 17662267), (1501, 13990963), (1681, 12492823), (2291, 9166493), (3239, 6483617), (3857, 5444759), (5453, 3851171), (8323, 2523181), (10507, 1998709), (11767, 1784689), (16037, 1309499), (22591, 929593), (22673, 926231), (31939, 657517), (43529, 482447), (48749, 430787), (61541, 341243), (68921, 304703), (93931, 223573), (132799, 158137)]