20900646

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1567}}^1$

素因数の和:1610

約数の個数: 64

約数和(自身を含む): 52684800

約数和(自身を除く): 31784154

約数列:

[1, 2, 3, 6, 9, 13, 18, 19, 26, 27, 38, 39, 54, 57, 78, 114, 117, 171, 234, 247, 342, 351, 494, 513, 702, 741, 1026, 1482, 1567, 2223, 3134, 4446, 4701, 6669, 9402, 13338, 14103, 20371, 28206, 29773, 40742, 42309, 59546, 61113, 84618, 89319, 122226, 178638, 183339, 267957, 366678, 387049, 535914, 550017, 774098, 803871, 1100034, 1161147, 1607742, 2322294, 3483441, 6966882, 10450323, 20900646]

約数ペア:

[(1, 20900646), (2, 10450323), (3, 6966882), (6, 3483441), (9, 2322294), (13, 1607742), (18, 1161147), (19, 1100034), (26, 803871), (27, 774098), (38, 550017), (39, 535914), (54, 387049), (57, 366678), (78, 267957), (114, 183339), (117, 178638), (171, 122226), (234, 89319), (247, 84618), (342, 61113), (351, 59546), (494, 42309), (513, 40742), (702, 29773), (741, 28206), (1026, 20371), (1482, 14103), (1567, 13338), (2223, 9402), (3134, 6669), (4446, 4701)]