261566320

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{911}}^1$

素因数の和:1058

約数の個数: 80

約数和(自身を含む): 631709568

約数和(自身を除く): 370143248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 97, 148, 185, 194, 296, 370, 388, 485, 592, 740, 776, 911, 970, 1480, 1552, 1822, 1940, 2960, 3589, 3644, 3880, 4555, 7178, 7288, 7760, 9110, 14356, 14576, 17945, 18220, 28712, 33707, 35890, 36440, 57424, 67414, 71780, 72880, 88367, 134828, 143560, 168535, 176734, 269656, 287120, 337070, 353468, 441835, 539312, 674140, 706936, 883670, 1348280, 1413872, 1767340, 2696560, 3269579, 3534680, 6539158, 7069360, 13078316, 16347895, 26156632, 32695790, 52313264, 65391580, 130783160, 261566320]

約数ペア:

[(1, 261566320), (2, 130783160), (4, 65391580), (5, 52313264), (8, 32695790), (10, 26156632), (16, 16347895), (20, 13078316), (37, 7069360), (40, 6539158), (74, 3534680), (80, 3269579), (97, 2696560), (148, 1767340), (185, 1413872), (194, 1348280), (296, 883670), (370, 706936), (388, 674140), (485, 539312), (592, 441835), (740, 353468), (776, 337070), (911, 287120), (970, 269656), (1480, 176734), (1552, 168535), (1822, 143560), (1940, 134828), (2960, 88367), (3589, 72880), (3644, 71780), (3880, 67414), (4555, 57424), (7178, 36440), (7288, 35890), (7760, 33707), (9110, 28712), (14356, 18220), (14576, 17945)]