208369980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12721}}^1$

素因数の和:12756

約数の個数: 144

約数和(自身を含む): 777975744

約数和(自身を除く): 569605764

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 28, 30, 35, 36, 39, 42, 45, 52, 60, 63, 65, 70, 78, 84, 90, 91, 105, 117, 126, 130, 140, 156, 180, 182, 195, 210, 234, 252, 260, 273, 315, 364, 390, 420, 455, 468, 546, 585, 630, 780, 819, 910, 1092, 1170, 1260, 1365, 1638, 1820, 2340, 2730, 3276, 4095, 5460, 8190, 12721, 16380, 25442, 38163, 50884, 63605, 76326, 89047, 114489, 127210, 152652, 165373, 178094, 190815, 228978, 254420, 267141, 330746, 356188, 381630, 445235, 457956, 496119, 534282, 572445, 661492, 763260, 801423, 826865, 890470, 992238, 1068564, 1144890, 1157611, 1335705, 1488357, 1602846, 1653730, 1780940, 1984476, 2289780, 2315222, 2480595, 2671410, 2976714, 3205692, 3307460, 3472833, 4007115, 4630444, 4961190, 5342820, 5788055, 5953428, 6945666, 7441785, 8014230, 9922380, 10418499, 11576110, 13891332, 14883570, 16028460, 17364165, 20836998, 23152220, 29767140, 34728330, 41673996, 52092495, 69456660, 104184990, 208369980]

約数ペア:

[(1, 208369980), (2, 104184990), (3, 69456660), (4, 52092495), (5, 41673996), (6, 34728330), (7, 29767140), (9, 23152220), (10, 20836998), (12, 17364165), (13, 16028460), (14, 14883570), (15, 13891332), (18, 11576110), (20, 10418499), (21, 9922380), (26, 8014230), (28, 7441785), (30, 6945666), (35, 5953428), (36, 5788055), (39, 5342820), (42, 4961190), (45, 4630444), (52, 4007115), (60, 3472833), (63, 3307460), (65, 3205692), (70, 2976714), (78, 2671410), (84, 2480595), (90, 2315222), (91, 2289780), (105, 1984476), (117, 1780940), (126, 1653730), (130, 1602846), (140, 1488357), (156, 1335705), (180, 1157611), (182, 1144890), (195, 1068564), (210, 992238), (234, 890470), (252, 826865), (260, 801423), (273, 763260), (315, 661492), (364, 572445), (390, 534282), (420, 496119), (455, 457956), (468, 445235), (546, 381630), (585, 356188), (630, 330746), (780, 267141), (819, 254420), (910, 228978), (1092, 190815), (1170, 178094), (1260, 165373), (1365, 152652), (1638, 127210), (1820, 114489), (2340, 89047), (2730, 76326), (3276, 63605), (4095, 50884), (5460, 38163), (8190, 25442), (12721, 16380)]