378400

素因数分解:

$2^5\times 5^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1$

素因数の和:74

約数の個数: 72

約数和(自身を含む): 1031184

約数和(自身を除く): 652784

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 32, 40, 43, 44, 50, 55, 80, 86, 88, 100, 110, 160, 172, 176, 200, 215, 220, 275, 344, 352, 400, 430, 440, 473, 550, 688, 800, 860, 880, 946, 1075, 1100, 1376, 1720, 1760, 1892, 2150, 2200, 2365, 3440, 3784, 4300, 4400, 4730, 6880, 7568, 8600, 8800, 9460, 11825, 15136, 17200, 18920, 23650, 34400, 37840, 47300, 75680, 94600, 189200, 378400]

約数ペア:

[(1, 378400), (2, 189200), (4, 94600), (5, 75680), (8, 47300), (10, 37840), (11, 34400), (16, 23650), (20, 18920), (22, 17200), (25, 15136), (32, 11825), (40, 9460), (43, 8800), (44, 8600), (50, 7568), (55, 6880), (80, 4730), (86, 4400), (88, 4300), (100, 3784), (110, 3440), (160, 2365), (172, 2200), (176, 2150), (200, 1892), (215, 1760), (220, 1720), (275, 1376), (344, 1100), (352, 1075), (400, 946), (430, 880), (440, 860), (473, 800), (550, 688)]