81068720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{337}}^1$

素因数の和:478

約数の個数: 80

約数和(自身を含む): 197154048

約数和(自身を除く): 116085328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 97, 124, 155, 194, 248, 310, 337, 388, 485, 496, 620, 674, 776, 970, 1240, 1348, 1552, 1685, 1940, 2480, 2696, 3007, 3370, 3880, 5392, 6014, 6740, 7760, 10447, 12028, 13480, 15035, 20894, 24056, 26960, 30070, 32689, 41788, 48112, 52235, 60140, 65378, 83576, 104470, 120280, 130756, 163445, 167152, 208940, 240560, 261512, 326890, 417880, 523024, 653780, 835760, 1013359, 1307560, 2026718, 2615120, 4053436, 5066795, 8106872, 10133590, 16213744, 20267180, 40534360, 81068720]

約数ペア:

[(1, 81068720), (2, 40534360), (4, 20267180), (5, 16213744), (8, 10133590), (10, 8106872), (16, 5066795), (20, 4053436), (31, 2615120), (40, 2026718), (62, 1307560), (80, 1013359), (97, 835760), (124, 653780), (155, 523024), (194, 417880), (248, 326890), (310, 261512), (337, 240560), (388, 208940), (485, 167152), (496, 163445), (620, 130756), (674, 120280), (776, 104470), (970, 83576), (1240, 65378), (1348, 60140), (1552, 52235), (1685, 48112), (1940, 41788), (2480, 32689), (2696, 30070), (3007, 26960), (3370, 24056), (3880, 20894), (5392, 15035), (6014, 13480), (6740, 12028), (7760, 10447)]