212909180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{907}}^1$

素因数の和:1035

約数の個数: 72

約数和(自身を含む): 497064624

約数和(自身を除く): 284155444

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 97, 110, 121, 194, 220, 242, 388, 484, 485, 605, 907, 970, 1067, 1210, 1814, 1940, 2134, 2420, 3628, 4268, 4535, 5335, 9070, 9977, 10670, 11737, 18140, 19954, 21340, 23474, 39908, 46948, 49885, 58685, 87979, 99770, 109747, 117370, 175958, 199540, 219494, 234740, 351916, 438988, 439895, 548735, 879790, 967769, 1097470, 1759580, 1935538, 2194940, 3871076, 4838845, 9677690, 10645459, 19355380, 21290918, 42581836, 53227295, 106454590, 212909180]

約数ペア:

[(1, 212909180), (2, 106454590), (4, 53227295), (5, 42581836), (10, 21290918), (11, 19355380), (20, 10645459), (22, 9677690), (44, 4838845), (55, 3871076), (97, 2194940), (110, 1935538), (121, 1759580), (194, 1097470), (220, 967769), (242, 879790), (388, 548735), (484, 439895), (485, 438988), (605, 351916), (907, 234740), (970, 219494), (1067, 199540), (1210, 175958), (1814, 117370), (1940, 109747), (2134, 99770), (2420, 87979), (3628, 58685), (4268, 49885), (4535, 46948), (5335, 39908), (9070, 23474), (9977, 21340), (10670, 19954), (11737, 18140)]