21975156

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1$

素因数の和:174

約数の個数: 144

約数和(自身を含む): 68490240

約数和(自身を除く): 46515084

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 29, 31, 36, 42, 58, 62, 63, 84, 87, 93, 97, 116, 124, 126, 174, 186, 194, 203, 217, 252, 261, 279, 291, 348, 372, 388, 406, 434, 522, 558, 582, 609, 651, 679, 812, 868, 873, 899, 1044, 1116, 1164, 1218, 1302, 1358, 1746, 1798, 1827, 1953, 2037, 2436, 2604, 2697, 2716, 2813, 3007, 3492, 3596, 3654, 3906, 4074, 5394, 5626, 6014, 6111, 6293, 7308, 7812, 8091, 8148, 8439, 9021, 10788, 11252, 12028, 12222, 12586, 16182, 16878, 18042, 18879, 19691, 21049, 24444, 25172, 25317, 27063, 32364, 33756, 36084, 37758, 39382, 42098, 50634, 54126, 56637, 59073, 63147, 75516, 78764, 84196, 87203, 101268, 108252, 113274, 118146, 126294, 174406, 177219, 189441, 226548, 236292, 252588, 261609, 348812, 354438, 378882, 523218, 610421, 708876, 757764, 784827, 1046436, 1220842, 1569654, 1831263, 2441684, 3139308, 3662526, 5493789, 7325052, 10987578, 21975156]

約数ペア:

[(1, 21975156), (2, 10987578), (3, 7325052), (4, 5493789), (6, 3662526), (7, 3139308), (9, 2441684), (12, 1831263), (14, 1569654), (18, 1220842), (21, 1046436), (28, 784827), (29, 757764), (31, 708876), (36, 610421), (42, 523218), (58, 378882), (62, 354438), (63, 348812), (84, 261609), (87, 252588), (93, 236292), (97, 226548), (116, 189441), (124, 177219), (126, 174406), (174, 126294), (186, 118146), (194, 113274), (203, 108252), (217, 101268), (252, 87203), (261, 84196), (279, 78764), (291, 75516), (348, 63147), (372, 59073), (388, 56637), (406, 54126), (434, 50634), (522, 42098), (558, 39382), (582, 37758), (609, 36084), (651, 33756), (679, 32364), (812, 27063), (868, 25317), (873, 25172), (899, 24444), (1044, 21049), (1116, 19691), (1164, 18879), (1218, 18042), (1302, 16878), (1358, 16182), (1746, 12586), (1798, 12222), (1827, 12028), (1953, 11252), (2037, 10788), (2436, 9021), (2604, 8439), (2697, 8148), (2716, 8091), (2813, 7812), (3007, 7308), (3492, 6293), (3596, 6111), (3654, 6014), (3906, 5626), (4074, 5394)]