256217580

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1451}}^1$

素因数の和:1581

約数の個数: 120

約数和(自身を含む): 811697040

約数和(自身を除く): 555479460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 109, 135, 162, 180, 218, 270, 324, 327, 405, 436, 540, 545, 654, 810, 981, 1090, 1308, 1451, 1620, 1635, 1962, 2180, 2902, 2943, 3270, 3924, 4353, 4905, 5804, 5886, 6540, 7255, 8706, 8829, 9810, 11772, 13059, 14510, 14715, 17412, 17658, 19620, 21765, 26118, 29020, 29430, 35316, 39177, 43530, 44145, 52236, 58860, 65295, 78354, 87060, 88290, 117531, 130590, 156708, 158159, 176580, 195885, 235062, 261180, 316318, 391770, 470124, 474477, 587655, 632636, 783540, 790795, 948954, 1175310, 1423431, 1581590, 1897908, 2350620, 2372385, 2846862, 3163180, 4270293, 4744770, 5693724, 7117155, 8540586, 9489540, 12810879, 14234310, 17081172, 21351465, 25621758, 28468620, 42702930, 51243516, 64054395, 85405860, 128108790, 256217580]

約数ペア:

[(1, 256217580), (2, 128108790), (3, 85405860), (4, 64054395), (5, 51243516), (6, 42702930), (9, 28468620), (10, 25621758), (12, 21351465), (15, 17081172), (18, 14234310), (20, 12810879), (27, 9489540), (30, 8540586), (36, 7117155), (45, 5693724), (54, 4744770), (60, 4270293), (81, 3163180), (90, 2846862), (108, 2372385), (109, 2350620), (135, 1897908), (162, 1581590), (180, 1423431), (218, 1175310), (270, 948954), (324, 790795), (327, 783540), (405, 632636), (436, 587655), (540, 474477), (545, 470124), (654, 391770), (810, 316318), (981, 261180), (1090, 235062), (1308, 195885), (1451, 176580), (1620, 158159), (1635, 156708), (1962, 130590), (2180, 117531), (2902, 88290), (2943, 87060), (3270, 78354), (3924, 65295), (4353, 58860), (4905, 52236), (5804, 44145), (5886, 43530), (6540, 39177), (7255, 35316), (8706, 29430), (8829, 29020), (9810, 26118), (11772, 21765), (13059, 19620), (14510, 17658), (14715, 17412)]