257440680

素因数分解:

$2^3\times 3^4\times 5^1\times 7^1\times {\mathrm{11351}}^1$

素因数の和:11381

約数の個数: 160

約数和(自身を含む): 988986240

約数和(自身を除く): 731545560

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 81, 84, 90, 105, 108, 120, 126, 135, 140, 162, 168, 180, 189, 210, 216, 252, 270, 280, 315, 324, 360, 378, 405, 420, 504, 540, 567, 630, 648, 756, 810, 840, 945, 1080, 1134, 1260, 1512, 1620, 1890, 2268, 2520, 2835, 3240, 3780, 4536, 5670, 7560, 11340, 11351, 22680, 22702, 34053, 45404, 56755, 68106, 79457, 90808, 102159, 113510, 136212, 158914, 170265, 204318, 227020, 238371, 272424, 306477, 317828, 340530, 397285, 408636, 454040, 476742, 510795, 612954, 635656, 681060, 715113, 794570, 817272, 919431, 953484, 1021590, 1191855, 1225908, 1362120, 1430226, 1532385, 1589140, 1838862, 1906968, 2043180, 2145339, 2383710, 2451816, 2860452, 3064770, 3178280, 3575565, 3677724, 4086360, 4290678, 4597155, 4767420, 5720904, 6129540, 6436017, 7151130, 7355448, 8581356, 9194310, 9534840, 10726695, 12259080, 12872034, 14302260, 17162712, 18388620, 21453390, 25744068, 28604520, 32180085, 36777240, 42906780, 51488136, 64360170, 85813560, 128720340, 257440680]

約数ペア:

[(1, 257440680), (2, 128720340), (3, 85813560), (4, 64360170), (5, 51488136), (6, 42906780), (7, 36777240), (8, 32180085), (9, 28604520), (10, 25744068), (12, 21453390), (14, 18388620), (15, 17162712), (18, 14302260), (20, 12872034), (21, 12259080), (24, 10726695), (27, 9534840), (28, 9194310), (30, 8581356), (35, 7355448), (36, 7151130), (40, 6436017), (42, 6129540), (45, 5720904), (54, 4767420), (56, 4597155), (60, 4290678), (63, 4086360), (70, 3677724), (72, 3575565), (81, 3178280), (84, 3064770), (90, 2860452), (105, 2451816), (108, 2383710), (120, 2145339), (126, 2043180), (135, 1906968), (140, 1838862), (162, 1589140), (168, 1532385), (180, 1430226), (189, 1362120), (210, 1225908), (216, 1191855), (252, 1021590), (270, 953484), (280, 919431), (315, 817272), (324, 794570), (360, 715113), (378, 681060), (405, 635656), (420, 612954), (504, 510795), (540, 476742), (567, 454040), (630, 408636), (648, 397285), (756, 340530), (810, 317828), (840, 306477), (945, 272424), (1080, 238371), (1134, 227020), (1260, 204318), (1512, 170265), (1620, 158914), (1890, 136212), (2268, 113510), (2520, 102159), (2835, 90808), (3240, 79457), (3780, 68106), (4536, 56755), (5670, 45404), (7560, 34053), (11340, 22702), (11351, 22680)]