21000742569

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{423257}}^1$

素因数の和:423449

約数の個数: 24

約数和(自身を含む): 31363417800

約数和(自身を除く): 10362675231

約数列:

[1, 3, 9, 37, 111, 149, 333, 447, 1341, 5513, 16539, 49617, 423257, 1269771, 3809313, 15660509, 46981527, 63065293, 140944581, 189195879, 567587637, 2333415841, 7000247523, 21000742569]

約数ペア:

[(1, 21000742569), (3, 7000247523), (9, 2333415841), (37, 567587637), (111, 189195879), (149, 140944581), (333, 63065293), (447, 46981527), (1341, 15660509), (5513, 3809313), (16539, 1269771), (49617, 423257)]