256804527

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1\times {\mathrm{937}}^1$

素因数の和:1399

約数の個数: 32

約数和(自身を含む): 405336064

約数和(自身を除く): 148531537

約数列:

[1, 3, 7, 21, 31, 93, 217, 421, 651, 937, 1263, 2811, 2947, 6559, 8841, 13051, 19677, 29047, 39153, 87141, 91357, 203329, 274071, 394477, 609987, 1183431, 2761339, 8284017, 12228787, 36686361, 85601509, 256804527]

約数ペア:

[(1, 256804527), (3, 85601509), (7, 36686361), (21, 12228787), (31, 8284017), (93, 2761339), (217, 1183431), (421, 609987), (651, 394477), (937, 274071), (1263, 203329), (2811, 91357), (2947, 87141), (6559, 39153), (8841, 29047), (13051, 19677)]