257203755

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{359}}^1$

素因数の和:466

約数の個数: 80

約数和(自身を含む): 486129600

約数和(自身を除く): 228925845

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 61, 81, 87, 135, 145, 183, 261, 305, 359, 405, 435, 549, 783, 915, 1077, 1305, 1647, 1769, 1795, 2349, 2745, 3231, 3915, 4941, 5307, 5385, 8235, 8845, 9693, 10411, 11745, 15921, 16155, 21899, 24705, 26535, 29079, 31233, 47763, 48465, 52055, 65697, 79605, 93699, 109495, 143289, 145395, 156165, 197091, 238815, 281097, 328485, 468495, 591273, 635071, 716445, 843291, 985455, 1405485, 1773819, 1905213, 2956365, 3175355, 4216455, 5715639, 8869095, 9526065, 17146917, 28578195, 51440751, 85734585, 257203755]

約数ペア:

[(1, 257203755), (3, 85734585), (5, 51440751), (9, 28578195), (15, 17146917), (27, 9526065), (29, 8869095), (45, 5715639), (61, 4216455), (81, 3175355), (87, 2956365), (135, 1905213), (145, 1773819), (183, 1405485), (261, 985455), (305, 843291), (359, 716445), (405, 635071), (435, 591273), (549, 468495), (783, 328485), (915, 281097), (1077, 238815), (1305, 197091), (1647, 156165), (1769, 145395), (1795, 143289), (2349, 109495), (2745, 93699), (3231, 79605), (3915, 65697), (4941, 52055), (5307, 48465), (5385, 47763), (8235, 31233), (8845, 29079), (9693, 26535), (10411, 24705), (11745, 21899), (15921, 16155)]