211221972

素因数分解:

$2^2\times 3^3\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1$

素因数の和:291

約数の個数: 192

約数和(自身を含む): 638238720

約数和(自身を除く): 427016748

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 23, 26, 27, 31, 36, 39, 46, 52, 54, 62, 69, 78, 92, 93, 108, 117, 124, 138, 156, 186, 207, 211, 234, 276, 279, 299, 351, 372, 403, 414, 422, 468, 558, 598, 621, 633, 702, 713, 806, 828, 837, 844, 897, 1116, 1196, 1209, 1242, 1266, 1404, 1426, 1612, 1674, 1794, 1899, 2139, 2418, 2484, 2532, 2691, 2743, 2852, 3348, 3588, 3627, 3798, 4278, 4836, 4853, 5382, 5486, 5697, 6417, 6541, 7254, 7596, 8073, 8229, 8556, 9269, 9706, 10764, 10881, 10972, 11394, 12834, 13082, 14508, 14559, 16146, 16458, 18538, 19251, 19412, 19623, 21762, 22788, 24687, 25668, 26164, 27807, 29118, 32292, 32916, 37076, 38502, 39246, 43524, 43677, 49374, 55614, 58236, 58869, 63089, 74061, 77004, 78492, 83421, 85033, 87354, 98748, 111228, 117738, 126178, 131031, 148122, 150443, 166842, 170066, 174708, 176607, 189267, 235476, 250263, 252356, 255099, 262062, 296244, 300886, 333684, 340132, 353214, 378534, 451329, 500526, 510198, 524124, 567801, 601772, 706428, 757068, 765297, 902658, 1001052, 1020396, 1135602, 1353987, 1530594, 1703403, 1805316, 1955759, 2271204, 2295891, 2707974, 3061188, 3406806, 3911518, 4061961, 4591782, 5415948, 5867277, 6813612, 7823036, 8123922, 9183564, 11734554, 16247844, 17601831, 23469108, 35203662, 52805493, 70407324, 105610986, 211221972]

約数ペア:

[(1, 211221972), (2, 105610986), (3, 70407324), (4, 52805493), (6, 35203662), (9, 23469108), (12, 17601831), (13, 16247844), (18, 11734554), (23, 9183564), (26, 8123922), (27, 7823036), (31, 6813612), (36, 5867277), (39, 5415948), (46, 4591782), (52, 4061961), (54, 3911518), (62, 3406806), (69, 3061188), (78, 2707974), (92, 2295891), (93, 2271204), (108, 1955759), (117, 1805316), (124, 1703403), (138, 1530594), (156, 1353987), (186, 1135602), (207, 1020396), (211, 1001052), (234, 902658), (276, 765297), (279, 757068), (299, 706428), (351, 601772), (372, 567801), (403, 524124), (414, 510198), (422, 500526), (468, 451329), (558, 378534), (598, 353214), (621, 340132), (633, 333684), (702, 300886), (713, 296244), (806, 262062), (828, 255099), (837, 252356), (844, 250263), (897, 235476), (1116, 189267), (1196, 176607), (1209, 174708), (1242, 170066), (1266, 166842), (1404, 150443), (1426, 148122), (1612, 131031), (1674, 126178), (1794, 117738), (1899, 111228), (2139, 98748), (2418, 87354), (2484, 85033), (2532, 83421), (2691, 78492), (2743, 77004), (2852, 74061), (3348, 63089), (3588, 58869), (3627, 58236), (3798, 55614), (4278, 49374), (4836, 43677), (4853, 43524), (5382, 39246), (5486, 38502), (5697, 37076), (6417, 32916), (6541, 32292), (7254, 29118), (7596, 27807), (8073, 26164), (8229, 25668), (8556, 24687), (9269, 22788), (9706, 21762), (10764, 19623), (10881, 19412), (10972, 19251), (11394, 18538), (12834, 16458), (13082, 16146), (14508, 14559)]