131309440

素因数分解:

$2^7\times 5^1\times {\mathrm{205171}}^1$

素因数の和:205190

約数の個数: 32

約数和(自身を含む): 313913160

約数和(自身を除く): 182603720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 205171, 410342, 820684, 1025855, 1641368, 2051710, 3282736, 4103420, 6565472, 8206840, 13130944, 16413680, 26261888, 32827360, 65654720, 131309440]

約数ペア:

[(1, 131309440), (2, 65654720), (4, 32827360), (5, 26261888), (8, 16413680), (10, 13130944), (16, 8206840), (20, 6565472), (32, 4103420), (40, 3282736), (64, 2051710), (80, 1641368), (128, 1025855), (160, 820684), (320, 410342), (640, 205171)]