256578320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1\times {\mathrm{337}}^1$

素因数の和:688

約数の個数: 80

約数和(自身を含む): 619627008

約数和(自身を除く): 363048688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 307, 310, 337, 496, 614, 620, 674, 1228, 1240, 1348, 1535, 1685, 2456, 2480, 2696, 3070, 3370, 4912, 5392, 6140, 6740, 9517, 10447, 12280, 13480, 19034, 20894, 24560, 26960, 38068, 41788, 47585, 52235, 76136, 83576, 95170, 103459, 104470, 152272, 167152, 190340, 206918, 208940, 380680, 413836, 417880, 517295, 761360, 827672, 835760, 1034590, 1655344, 2069180, 3207229, 4138360, 6414458, 8276720, 12828916, 16036145, 25657832, 32072290, 51315664, 64144580, 128289160, 256578320]

約数ペア:

[(1, 256578320), (2, 128289160), (4, 64144580), (5, 51315664), (8, 32072290), (10, 25657832), (16, 16036145), (20, 12828916), (31, 8276720), (40, 6414458), (62, 4138360), (80, 3207229), (124, 2069180), (155, 1655344), (248, 1034590), (307, 835760), (310, 827672), (337, 761360), (496, 517295), (614, 417880), (620, 413836), (674, 380680), (1228, 208940), (1240, 206918), (1348, 190340), (1535, 167152), (1685, 152272), (2456, 104470), (2480, 103459), (2696, 95170), (3070, 83576), (3370, 76136), (4912, 52235), (5392, 47585), (6140, 41788), (6740, 38068), (9517, 26960), (10447, 24560), (12280, 20894), (13480, 19034)]