78131240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 202487040

約数和(自身を除く): 124355800

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 61, 71, 82, 88, 110, 122, 142, 164, 205, 220, 244, 284, 305, 328, 355, 410, 440, 451, 488, 568, 610, 671, 710, 781, 820, 902, 1220, 1342, 1420, 1562, 1640, 1804, 2255, 2440, 2501, 2684, 2840, 2911, 3124, 3355, 3608, 3905, 4331, 4510, 5002, 5368, 5822, 6248, 6710, 7810, 8662, 9020, 10004, 11644, 12505, 13420, 14555, 15620, 17324, 18040, 20008, 21655, 23288, 25010, 26840, 27511, 29110, 31240, 32021, 34648, 43310, 47641, 50020, 55022, 58220, 64042, 86620, 95282, 100040, 110044, 116440, 128084, 137555, 160105, 173240, 177571, 190564, 220088, 238205, 256168, 275110, 320210, 355142, 381128, 476410, 550220, 640420, 710284, 887855, 952820, 1100440, 1280840, 1420568, 1775710, 1905640, 1953281, 3551420, 3906562, 7102840, 7813124, 9766405, 15626248, 19532810, 39065620, 78131240]

約数ペア:

[(1, 78131240), (2, 39065620), (4, 19532810), (5, 15626248), (8, 9766405), (10, 7813124), (11, 7102840), (20, 3906562), (22, 3551420), (40, 1953281), (41, 1905640), (44, 1775710), (55, 1420568), (61, 1280840), (71, 1100440), (82, 952820), (88, 887855), (110, 710284), (122, 640420), (142, 550220), (164, 476410), (205, 381128), (220, 355142), (244, 320210), (284, 275110), (305, 256168), (328, 238205), (355, 220088), (410, 190564), (440, 177571), (451, 173240), (488, 160105), (568, 137555), (610, 128084), (671, 116440), (710, 110044), (781, 100040), (820, 95282), (902, 86620), (1220, 64042), (1342, 58220), (1420, 55022), (1562, 50020), (1640, 47641), (1804, 43310), (2255, 34648), (2440, 32021), (2501, 31240), (2684, 29110), (2840, 27511), (2911, 26840), (3124, 25010), (3355, 23288), (3608, 21655), (3905, 20008), (4331, 18040), (4510, 17324), (5002, 15620), (5368, 14555), (5822, 13420), (6248, 12505), (6710, 11644), (7810, 10004), (8662, 9020)]