68894840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{1249}}^1$

素因数の和:1464

約数の個数: 64

約数和(自身を含む): 178200000

約数和(自身を除く): 109305160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 197, 280, 394, 788, 985, 1249, 1379, 1576, 1970, 2498, 2758, 3940, 4996, 5516, 6245, 6895, 7880, 8743, 9992, 11032, 12490, 13790, 17486, 24980, 27580, 34972, 43715, 49960, 55160, 69944, 87430, 174860, 246053, 349720, 492106, 984212, 1230265, 1722371, 1968424, 2460530, 3444742, 4921060, 6889484, 8611855, 9842120, 13778968, 17223710, 34447420, 68894840]

約数ペア:

[(1, 68894840), (2, 34447420), (4, 17223710), (5, 13778968), (7, 9842120), (8, 8611855), (10, 6889484), (14, 4921060), (20, 3444742), (28, 2460530), (35, 1968424), (40, 1722371), (56, 1230265), (70, 984212), (140, 492106), (197, 349720), (280, 246053), (394, 174860), (788, 87430), (985, 69944), (1249, 55160), (1379, 49960), (1576, 43715), (1970, 34972), (2498, 27580), (2758, 24980), (3940, 17486), (4996, 13790), (5516, 12490), (6245, 11032), (6895, 9992), (7880, 8743)]