20617140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{37}}^2\times {\mathrm{251}}^1$

素因数の和:337

約数の個数: 72

約数和(自身を含む): 59566752

約数和(自身を除く): 38949612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 37, 60, 74, 111, 148, 185, 222, 251, 370, 444, 502, 555, 740, 753, 1004, 1110, 1255, 1369, 1506, 2220, 2510, 2738, 3012, 3765, 4107, 5020, 5476, 6845, 7530, 8214, 9287, 13690, 15060, 16428, 18574, 20535, 27380, 27861, 37148, 41070, 46435, 55722, 82140, 92870, 111444, 139305, 185740, 278610, 343619, 557220, 687238, 1030857, 1374476, 1718095, 2061714, 3436190, 4123428, 5154285, 6872380, 10308570, 20617140]

約数ペア:

[(1, 20617140), (2, 10308570), (3, 6872380), (4, 5154285), (5, 4123428), (6, 3436190), (10, 2061714), (12, 1718095), (15, 1374476), (20, 1030857), (30, 687238), (37, 557220), (60, 343619), (74, 278610), (111, 185740), (148, 139305), (185, 111444), (222, 92870), (251, 82140), (370, 55722), (444, 46435), (502, 41070), (555, 37148), (740, 27861), (753, 27380), (1004, 20535), (1110, 18574), (1255, 16428), (1369, 15060), (1506, 13690), (2220, 9287), (2510, 8214), (2738, 7530), (3012, 6845), (3765, 5476), (4107, 5020)]