257189478

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{3709}}^1$

素因数の和:3861

約数の個数: 64

約数和(自身を含む): 638238720

約数和(自身を除く): 381049242

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 91, 127, 182, 254, 273, 381, 546, 762, 889, 1651, 1778, 2667, 3302, 3709, 4953, 5334, 7418, 9906, 11127, 11557, 22254, 23114, 25963, 34671, 48217, 51926, 69342, 77889, 96434, 144651, 155778, 289302, 337519, 471043, 675038, 942086, 1012557, 1413129, 2025114, 2826258, 3297301, 6123559, 6594602, 9891903, 12247118, 18370677, 19783806, 36741354, 42864913, 85729826, 128594739, 257189478]

約数ペア:

[(1, 257189478), (2, 128594739), (3, 85729826), (6, 42864913), (7, 36741354), (13, 19783806), (14, 18370677), (21, 12247118), (26, 9891903), (39, 6594602), (42, 6123559), (78, 3297301), (91, 2826258), (127, 2025114), (182, 1413129), (254, 1012557), (273, 942086), (381, 675038), (546, 471043), (762, 337519), (889, 289302), (1651, 155778), (1778, 144651), (2667, 96434), (3302, 77889), (3709, 69342), (4953, 51926), (5334, 48217), (7418, 34671), (9906, 25963), (11127, 23114), (11557, 22254)]