21285804

素因数分解:

$2^2\times 3^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{251}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 51480576

約数和(自身を除く): 30194772

約数列:

[1, 2, 3, 4, 6, 12, 37, 74, 111, 148, 191, 222, 251, 382, 444, 502, 573, 753, 764, 1004, 1146, 1506, 2292, 3012, 7067, 9287, 14134, 18574, 21201, 27861, 28268, 37148, 42402, 47941, 55722, 84804, 95882, 111444, 143823, 191764, 287646, 575292, 1773817, 3547634, 5321451, 7095268, 10642902, 21285804]

約数ペア:

[(1, 21285804), (2, 10642902), (3, 7095268), (4, 5321451), (6, 3547634), (12, 1773817), (37, 575292), (74, 287646), (111, 191764), (148, 143823), (191, 111444), (222, 95882), (251, 84804), (382, 55722), (444, 47941), (502, 42402), (573, 37148), (753, 28268), (764, 27861), (1004, 21201), (1146, 18574), (1506, 14134), (2292, 9287), (3012, 7067)]