212053640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1$

素因数の和:223

約数の個数: 128

約数和(自身を含む): 521579520

約数和(自身を除く): 309525880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 43, 62, 82, 86, 97, 124, 155, 164, 172, 194, 205, 215, 248, 310, 328, 344, 388, 410, 430, 485, 620, 776, 820, 860, 970, 1240, 1271, 1333, 1640, 1720, 1763, 1940, 2542, 2666, 3007, 3526, 3880, 3977, 4171, 5084, 5332, 6014, 6355, 6665, 7052, 7954, 8342, 8815, 10168, 10664, 12028, 12710, 13330, 14104, 15035, 15908, 16684, 17630, 19885, 20855, 24056, 25420, 26660, 30070, 31816, 33368, 35260, 39770, 41710, 50840, 53320, 54653, 60140, 70520, 79540, 83420, 109306, 120280, 123287, 129301, 159080, 166840, 171011, 218612, 246574, 258602, 273265, 342022, 437224, 493148, 517204, 546530, 616435, 646505, 684044, 855055, 986296, 1034408, 1093060, 1232870, 1293010, 1368088, 1710110, 2186120, 2465740, 2586020, 3420220, 4931480, 5172040, 5301341, 6840440, 10602682, 21205364, 26506705, 42410728, 53013410, 106026820, 212053640]

約数ペア:

[(1, 212053640), (2, 106026820), (4, 53013410), (5, 42410728), (8, 26506705), (10, 21205364), (20, 10602682), (31, 6840440), (40, 5301341), (41, 5172040), (43, 4931480), (62, 3420220), (82, 2586020), (86, 2465740), (97, 2186120), (124, 1710110), (155, 1368088), (164, 1293010), (172, 1232870), (194, 1093060), (205, 1034408), (215, 986296), (248, 855055), (310, 684044), (328, 646505), (344, 616435), (388, 546530), (410, 517204), (430, 493148), (485, 437224), (620, 342022), (776, 273265), (820, 258602), (860, 246574), (970, 218612), (1240, 171011), (1271, 166840), (1333, 159080), (1640, 129301), (1720, 123287), (1763, 120280), (1940, 109306), (2542, 83420), (2666, 79540), (3007, 70520), (3526, 60140), (3880, 54653), (3977, 53320), (4171, 50840), (5084, 41710), (5332, 39770), (6014, 35260), (6355, 33368), (6665, 31816), (7052, 30070), (7954, 26660), (8342, 25420), (8815, 24056), (10168, 20855), (10664, 19885), (12028, 17630), (12710, 16684), (13330, 15908), (14104, 15035)]