81082240

素因数分解:

$2^7\times 5^1\times {\mathrm{126691}}^1$

素因数の和:126710

約数の個数: 32

約数和(自身を含む): 193838760

約数和(自身を除く): 112756520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 126691, 253382, 506764, 633455, 1013528, 1266910, 2027056, 2533820, 4054112, 5067640, 8108224, 10135280, 16216448, 20270560, 40541120, 81082240]

約数ペア:

[(1, 81082240), (2, 40541120), (4, 20270560), (5, 16216448), (8, 10135280), (10, 8108224), (16, 5067640), (20, 4054112), (32, 2533820), (40, 2027056), (64, 1266910), (80, 1013528), (128, 633455), (160, 506764), (320, 253382), (640, 126691)]