257685890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{379}}^1\times {\mathrm{883}}^1$

素因数の和:1287

約数の個数: 64

約数和(自身を含む): 580469760

約数和(自身を除く): 322783870

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 110, 154, 379, 385, 758, 770, 883, 1766, 1895, 2653, 3790, 4169, 4415, 5306, 6181, 8338, 8830, 9713, 12362, 13265, 19426, 20845, 26530, 29183, 30905, 41690, 48565, 58366, 61810, 67991, 97130, 135982, 145915, 291830, 334657, 339955, 669314, 679910, 1673285, 2342599, 3346570, 3681227, 4685198, 7362454, 11712995, 18406135, 23425990, 25768589, 36812270, 51537178, 128842945, 257685890]

約数ペア:

[(1, 257685890), (2, 128842945), (5, 51537178), (7, 36812270), (10, 25768589), (11, 23425990), (14, 18406135), (22, 11712995), (35, 7362454), (55, 4685198), (70, 3681227), (77, 3346570), (110, 2342599), (154, 1673285), (379, 679910), (385, 669314), (758, 339955), (770, 334657), (883, 291830), (1766, 145915), (1895, 135982), (2653, 97130), (3790, 67991), (4169, 61810), (4415, 58366), (5306, 48565), (6181, 41690), (8338, 30905), (8830, 29183), (9713, 26530), (12362, 20845), (13265, 19426)]