209564528

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{689357}}^1$

素因数の和:689384

約数の個数: 20

約数和(自身を含む): 427401960

約数和(自身を除く): 217837432

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 689357, 1378714, 2757428, 5514856, 11029712, 13097783, 26195566, 52391132, 104782264, 209564528]

約数ペア:

[(1, 209564528), (2, 104782264), (4, 52391132), (8, 26195566), (16, 13097783), (19, 11029712), (38, 5514856), (76, 2757428), (152, 1378714), (304, 689357)]