257551658

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{239}}^1$

素因数の和:483

約数の個数: 64

約数和(自身を含む): 495452160

約数和(自身を除く): 237900502

約数列:

[1, 2, 7, 13, 14, 26, 31, 62, 91, 182, 191, 217, 239, 382, 403, 434, 478, 806, 1337, 1673, 2483, 2674, 2821, 3107, 3346, 4966, 5642, 5921, 6214, 7409, 11842, 14818, 17381, 21749, 34762, 41447, 43498, 45649, 51863, 76973, 82894, 91298, 96317, 103726, 153946, 192634, 319543, 538811, 593437, 639086, 674219, 1077622, 1186874, 1348438, 1415119, 2830238, 4154059, 8308118, 9905833, 18396547, 19811666, 36793094, 128775829, 257551658]

約数ペア:

[(1, 257551658), (2, 128775829), (7, 36793094), (13, 19811666), (14, 18396547), (26, 9905833), (31, 8308118), (62, 4154059), (91, 2830238), (182, 1415119), (191, 1348438), (217, 1186874), (239, 1077622), (382, 674219), (403, 639086), (434, 593437), (478, 538811), (806, 319543), (1337, 192634), (1673, 153946), (2483, 103726), (2674, 96317), (2821, 91298), (3107, 82894), (3346, 76973), (4966, 51863), (5642, 45649), (5921, 43498), (6214, 41447), (7409, 34762), (11842, 21749), (14818, 17381)]