257817080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{353}}^1$

素因数の和:445

約数の個数: 96

約数和(自身を含む): 632739600

約数和(自身を除く): 374922520

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 31, 38, 40, 62, 76, 95, 124, 152, 155, 190, 248, 310, 353, 380, 589, 620, 706, 760, 961, 1178, 1240, 1412, 1765, 1922, 2356, 2824, 2945, 3530, 3844, 4712, 4805, 5890, 6707, 7060, 7688, 9610, 10943, 11780, 13414, 14120, 18259, 19220, 21886, 23560, 26828, 33535, 36518, 38440, 43772, 53656, 54715, 67070, 73036, 87544, 91295, 109430, 134140, 146072, 182590, 207917, 218860, 268280, 339233, 365180, 415834, 437720, 678466, 730360, 831668, 1039585, 1356932, 1663336, 1696165, 2079170, 2713864, 3392330, 4158340, 6445427, 6784660, 8316680, 12890854, 13569320, 25781708, 32227135, 51563416, 64454270, 128908540, 257817080]

約数ペア:

[(1, 257817080), (2, 128908540), (4, 64454270), (5, 51563416), (8, 32227135), (10, 25781708), (19, 13569320), (20, 12890854), (31, 8316680), (38, 6784660), (40, 6445427), (62, 4158340), (76, 3392330), (95, 2713864), (124, 2079170), (152, 1696165), (155, 1663336), (190, 1356932), (248, 1039585), (310, 831668), (353, 730360), (380, 678466), (589, 437720), (620, 415834), (706, 365180), (760, 339233), (961, 268280), (1178, 218860), (1240, 207917), (1412, 182590), (1765, 146072), (1922, 134140), (2356, 109430), (2824, 91295), (2945, 87544), (3530, 73036), (3844, 67070), (4712, 54715), (4805, 53656), (5890, 43772), (6707, 38440), (7060, 36518), (7688, 33535), (9610, 26828), (10943, 23560), (11780, 21886), (13414, 19220), (14120, 18259)]