389790808

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 813952800

約数和(自身を除く): 424161992

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 157, 178, 314, 317, 356, 628, 634, 712, 979, 1256, 1268, 1727, 1958, 2536, 3454, 3487, 3916, 6908, 6974, 7832, 13816, 13948, 13973, 27896, 27946, 28213, 49769, 55892, 56426, 99538, 111784, 112852, 153703, 199076, 225704, 307406, 310343, 398152, 547459, 614812, 620686, 1094918, 1229624, 1241372, 2189836, 2482744, 4379672, 4429441, 8858882, 17717764, 35435528, 48723851, 97447702, 194895404, 389790808]

約数ペア:

[(1, 389790808), (2, 194895404), (4, 97447702), (8, 48723851), (11, 35435528), (22, 17717764), (44, 8858882), (88, 4429441), (89, 4379672), (157, 2482744), (178, 2189836), (314, 1241372), (317, 1229624), (356, 1094918), (628, 620686), (634, 614812), (712, 547459), (979, 398152), (1256, 310343), (1268, 307406), (1727, 225704), (1958, 199076), (2536, 153703), (3454, 112852), (3487, 111784), (3916, 99538), (6908, 56426), (6974, 55892), (7832, 49769), (13816, 28213), (13948, 27946), (13973, 27896)]