257778430

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{1237}}^1$

素因数の和:1493

約数の個数: 64

約数和(自身を含む): 574035840

約数和(自身を除く): 316257410

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 229, 455, 458, 910, 1145, 1237, 1603, 2290, 2474, 2977, 3206, 5954, 6185, 8015, 8659, 12370, 14885, 16030, 16081, 17318, 20839, 29770, 32162, 41678, 43295, 80405, 86590, 104195, 112567, 160810, 208390, 225134, 283273, 562835, 566546, 1125670, 1416365, 1982911, 2832730, 3682549, 3965822, 7365098, 9914555, 18412745, 19829110, 25777843, 36825490, 51555686, 128889215, 257778430]

約数ペア:

[(1, 257778430), (2, 128889215), (5, 51555686), (7, 36825490), (10, 25777843), (13, 19829110), (14, 18412745), (26, 9914555), (35, 7365098), (65, 3965822), (70, 3682549), (91, 2832730), (130, 1982911), (182, 1416365), (229, 1125670), (455, 566546), (458, 562835), (910, 283273), (1145, 225134), (1237, 208390), (1603, 160810), (2290, 112567), (2474, 104195), (2977, 86590), (3206, 80405), (5954, 43295), (6185, 41678), (8015, 32162), (8659, 29770), (12370, 20839), (14885, 17318), (16030, 16081)]