217955556

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{331}}^1$

素因数の和:431

約数の個数: 192

約数和(自身を含む): 707983360

約数和(自身を除く): 490027804

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 27, 28, 36, 39, 42, 52, 54, 63, 67, 78, 84, 91, 108, 117, 126, 134, 156, 182, 189, 201, 234, 252, 268, 273, 331, 351, 364, 378, 402, 468, 469, 546, 603, 662, 702, 756, 804, 819, 871, 938, 993, 1092, 1206, 1324, 1404, 1407, 1638, 1742, 1809, 1876, 1986, 2317, 2412, 2457, 2613, 2814, 2979, 3276, 3484, 3618, 3972, 4221, 4303, 4634, 4914, 5226, 5628, 5958, 6097, 6951, 7236, 7839, 8442, 8606, 8937, 9268, 9828, 10452, 11916, 12194, 12663, 12909, 13902, 15678, 16884, 17212, 17874, 18291, 20853, 22177, 23517, 24388, 25326, 25818, 27804, 30121, 31356, 35748, 36582, 38727, 41706, 44354, 47034, 50652, 51636, 54873, 60242, 62559, 66531, 73164, 77454, 83412, 88708, 90363, 94068, 109746, 116181, 120484, 125118, 133062, 154908, 155239, 164619, 180726, 199593, 219492, 232362, 250236, 266124, 271089, 288301, 310478, 329238, 361452, 399186, 464724, 465717, 542178, 576602, 598779, 620956, 658476, 798372, 813267, 864903, 931434, 1084356, 1153204, 1197558, 1397151, 1626534, 1729806, 1862868, 2018107, 2395116, 2594709, 2794302, 3253068, 3459612, 4036214, 4191453, 5189418, 5588604, 6054321, 7784127, 8072428, 8382906, 10378836, 12108642, 15568254, 16765812, 18162963, 24217284, 31136508, 36325926, 54488889, 72651852, 108977778, 217955556]

約数ペア:

[(1, 217955556), (2, 108977778), (3, 72651852), (4, 54488889), (6, 36325926), (7, 31136508), (9, 24217284), (12, 18162963), (13, 16765812), (14, 15568254), (18, 12108642), (21, 10378836), (26, 8382906), (27, 8072428), (28, 7784127), (36, 6054321), (39, 5588604), (42, 5189418), (52, 4191453), (54, 4036214), (63, 3459612), (67, 3253068), (78, 2794302), (84, 2594709), (91, 2395116), (108, 2018107), (117, 1862868), (126, 1729806), (134, 1626534), (156, 1397151), (182, 1197558), (189, 1153204), (201, 1084356), (234, 931434), (252, 864903), (268, 813267), (273, 798372), (331, 658476), (351, 620956), (364, 598779), (378, 576602), (402, 542178), (468, 465717), (469, 464724), (546, 399186), (603, 361452), (662, 329238), (702, 310478), (756, 288301), (804, 271089), (819, 266124), (871, 250236), (938, 232362), (993, 219492), (1092, 199593), (1206, 180726), (1324, 164619), (1404, 155239), (1407, 154908), (1638, 133062), (1742, 125118), (1809, 120484), (1876, 116181), (1986, 109746), (2317, 94068), (2412, 90363), (2457, 88708), (2613, 83412), (2814, 77454), (2979, 73164), (3276, 66531), (3484, 62559), (3618, 60242), (3972, 54873), (4221, 51636), (4303, 50652), (4634, 47034), (4914, 44354), (5226, 41706), (5628, 38727), (5958, 36582), (6097, 35748), (6951, 31356), (7236, 30121), (7839, 27804), (8442, 25818), (8606, 25326), (8937, 24388), (9268, 23517), (9828, 22177), (10452, 20853), (11916, 18291), (12194, 17874), (12663, 17212), (12909, 16884), (13902, 15678)]