21676688

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1$

素因数の和:216

約数の個数: 80

約数和(自身を含む): 49282560

約数和(自身を除く): 27605872

約数列:

[1, 2, 4, 8, 11, 16, 22, 29, 31, 44, 58, 62, 88, 116, 124, 137, 176, 232, 248, 274, 319, 341, 464, 496, 548, 638, 682, 899, 1096, 1276, 1364, 1507, 1798, 2192, 2552, 2728, 3014, 3596, 3973, 4247, 5104, 5456, 6028, 7192, 7946, 8494, 9889, 12056, 14384, 15892, 16988, 19778, 24112, 31784, 33976, 39556, 43703, 46717, 63568, 67952, 79112, 87406, 93434, 123163, 158224, 174812, 186868, 246326, 349624, 373736, 492652, 699248, 747472, 985304, 1354793, 1970608, 2709586, 5419172, 10838344, 21676688]

約数ペア:

[(1, 21676688), (2, 10838344), (4, 5419172), (8, 2709586), (11, 1970608), (16, 1354793), (22, 985304), (29, 747472), (31, 699248), (44, 492652), (58, 373736), (62, 349624), (88, 246326), (116, 186868), (124, 174812), (137, 158224), (176, 123163), (232, 93434), (248, 87406), (274, 79112), (319, 67952), (341, 63568), (464, 46717), (496, 43703), (548, 39556), (638, 33976), (682, 31784), (899, 24112), (1096, 19778), (1276, 16988), (1364, 15892), (1507, 14384), (1798, 12056), (2192, 9889), (2552, 8494), (2728, 7946), (3014, 7192), (3596, 6028), (3973, 5456), (4247, 5104)]