257355540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1009}}^1$

素因数の和:1146

約数の個数: 144

約数和(自身を含む): 849248400

約数和(自身を除く): 591892860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 109, 117, 130, 156, 180, 195, 218, 234, 260, 327, 390, 436, 468, 545, 585, 654, 780, 981, 1009, 1090, 1170, 1308, 1417, 1635, 1962, 2018, 2180, 2340, 2834, 3027, 3270, 3924, 4036, 4251, 4905, 5045, 5668, 6054, 6540, 7085, 8502, 9081, 9810, 10090, 12108, 12753, 13117, 14170, 15135, 17004, 18162, 19620, 20180, 21255, 25506, 26234, 28340, 30270, 36324, 39351, 42510, 45405, 51012, 52468, 60540, 63765, 65585, 78702, 85020, 90810, 109981, 118053, 127530, 131170, 157404, 181620, 196755, 219962, 236106, 255060, 262340, 329943, 393510, 439924, 472212, 549905, 590265, 659886, 787020, 989829, 1099810, 1180530, 1319772, 1429753, 1649715, 1979658, 2199620, 2361060, 2859506, 3299430, 3959316, 4289259, 4949145, 5719012, 6598860, 7148765, 8578518, 9898290, 12867777, 14297530, 17157036, 19796580, 21446295, 25735554, 28595060, 42892590, 51471108, 64338885, 85785180, 128677770, 257355540]

約数ペア:

[(1, 257355540), (2, 128677770), (3, 85785180), (4, 64338885), (5, 51471108), (6, 42892590), (9, 28595060), (10, 25735554), (12, 21446295), (13, 19796580), (15, 17157036), (18, 14297530), (20, 12867777), (26, 9898290), (30, 8578518), (36, 7148765), (39, 6598860), (45, 5719012), (52, 4949145), (60, 4289259), (65, 3959316), (78, 3299430), (90, 2859506), (109, 2361060), (117, 2199620), (130, 1979658), (156, 1649715), (180, 1429753), (195, 1319772), (218, 1180530), (234, 1099810), (260, 989829), (327, 787020), (390, 659886), (436, 590265), (468, 549905), (545, 472212), (585, 439924), (654, 393510), (780, 329943), (981, 262340), (1009, 255060), (1090, 236106), (1170, 219962), (1308, 196755), (1417, 181620), (1635, 157404), (1962, 131170), (2018, 127530), (2180, 118053), (2340, 109981), (2834, 90810), (3027, 85020), (3270, 78702), (3924, 65585), (4036, 63765), (4251, 60540), (4905, 52468), (5045, 51012), (5668, 45405), (6054, 42510), (6540, 39351), (7085, 36324), (8502, 30270), (9081, 28340), (9810, 26234), (10090, 25506), (12108, 21255), (12753, 20180), (13117, 19620), (14170, 18162), (15135, 17004)]