131509120

素因数分解:

$2^7\times 5^1\times {\mathrm{205483}}^1$

素因数の和:205502

約数の個数: 32

約数和(自身を含む): 314390520

約数和(自身を除く): 182881400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 205483, 410966, 821932, 1027415, 1643864, 2054830, 3287728, 4109660, 6575456, 8219320, 13150912, 16438640, 26301824, 32877280, 65754560, 131509120]

約数ペア:

[(1, 131509120), (2, 65754560), (4, 32877280), (5, 26301824), (8, 16438640), (10, 13150912), (16, 8219320), (20, 6575456), (32, 4109660), (40, 3287728), (64, 2054830), (80, 1643864), (128, 1027415), (160, 821932), (320, 410966), (640, 205483)]