19667720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{137}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 46252080

約数和(自身を除く): 26584360

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 97, 137, 148, 185, 194, 274, 296, 370, 388, 485, 548, 685, 740, 776, 970, 1096, 1370, 1480, 1940, 2740, 3589, 3880, 5069, 5480, 7178, 10138, 13289, 14356, 17945, 20276, 25345, 26578, 28712, 35890, 40552, 50690, 53156, 66445, 71780, 101380, 106312, 132890, 143560, 202760, 265780, 491693, 531560, 983386, 1966772, 2458465, 3933544, 4916930, 9833860, 19667720]

約数ペア:

[(1, 19667720), (2, 9833860), (4, 4916930), (5, 3933544), (8, 2458465), (10, 1966772), (20, 983386), (37, 531560), (40, 491693), (74, 265780), (97, 202760), (137, 143560), (148, 132890), (185, 106312), (194, 101380), (274, 71780), (296, 66445), (370, 53156), (388, 50690), (485, 40552), (548, 35890), (685, 28712), (740, 26578), (776, 25345), (970, 20276), (1096, 17945), (1370, 14356), (1480, 13289), (1940, 10138), (2740, 7178), (3589, 5480), (3880, 5069)]