261548240

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{401}}^1$

素因数の和:708

約数の個数: 80

約数和(自身を含む): 631673856

約数和(自身を除く): 370125616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 263, 310, 401, 496, 526, 620, 802, 1052, 1240, 1315, 1604, 2005, 2104, 2480, 2630, 3208, 4010, 4208, 5260, 6416, 8020, 8153, 10520, 12431, 16040, 16306, 21040, 24862, 32080, 32612, 40765, 49724, 62155, 65224, 81530, 99448, 105463, 124310, 130448, 163060, 198896, 210926, 248620, 326120, 421852, 497240, 527315, 652240, 843704, 994480, 1054630, 1687408, 2109260, 3269353, 4218520, 6538706, 8437040, 13077412, 16346765, 26154824, 32693530, 52309648, 65387060, 130774120, 261548240]

約数ペア:

[(1, 261548240), (2, 130774120), (4, 65387060), (5, 52309648), (8, 32693530), (10, 26154824), (16, 16346765), (20, 13077412), (31, 8437040), (40, 6538706), (62, 4218520), (80, 3269353), (124, 2109260), (155, 1687408), (248, 1054630), (263, 994480), (310, 843704), (401, 652240), (496, 527315), (526, 497240), (620, 421852), (802, 326120), (1052, 248620), (1240, 210926), (1315, 198896), (1604, 163060), (2005, 130448), (2104, 124310), (2480, 105463), (2630, 99448), (3208, 81530), (4010, 65224), (4208, 62155), (5260, 49724), (6416, 40765), (8020, 32612), (8153, 32080), (10520, 24862), (12431, 21040), (16040, 16306)]